Merge isaki-audio2 branch, the overhaul of audio subsystem.
- Interrupt-oriented system rather than thread-oriented.
- Improve stability, quality and performance.
- Split playback and record cleanly. Improve halfduplex support.
- Many bugs are fixed including deadlocks, resource leaks, abuses, etc.
- Simplify audio filter mechanism. The encoding/channels/frequency
conversions are completely handled in the upper layer. So the hard-
ware driver only converts its hardware encoding (if necessary).
- audio_hw_if changes:
- Obsoletes query_encoding and add query_format instead.
- Obsoletes set_params and add set_format instead.
- Remove drain, setfd, mappage.
- The call sequences are changed.
- ioctl AUDIO_GETFD/SETFD, AUDIO_GETCHAN/SETCHAN are obsoleted.
- ioctl AUDIO_{QUERY,GET,SET}FORMAT are introduced.
- cleanup config attributes: au*conv and mulaw.
- All hardware drivers should follow it (I've done as much as possible).

Some file paths are changed:
- dev/audio.c -> dev/audio/audio.c (rewritten)
- dev/audiovar.h -> dev/audio/audiovar.h
- dev/audio_dai.h -> dev/audio/audio_dai.h
- dev/audio_if.h -> dev/audio/audio_if.h
- dev/audiobell.c -> dev/audio/audiobell.c
- dev/audiobellvar.h -> dev/audio/audiobellvar.h
- dev/mulaw.[ch] -> dev/audio/mulaw.[ch] + dev/audio/alaw.c

branches: 1.15.4;
revert previous; this was no typo.

fix typo (thanks gcc-6). There is no "pxaiis"

branches: 1.13.16;
armfpe is gone.

branches: 1.12.2;
Apply WM8731 support patch from TOYOKURA Atsushi, arranged by me.

- SL-C700: work fine
- SL-C750: attach failed
- SL-C860: not tested

branches: 1.11.6;
Add PXA25x based Zaurus SL-C700/750/760/860 support.

All porting work was done by TOYOKURA Atsushi, with
several minor adjustments for integration by me and nonaka@.

His SL-C700 first running NetBSD/zaurus was demonstrated on
NetBSD booth at Open Source Canference 2011 Tokyo/Fall:
http://www.NetBSD.org/gallery/events.html#opensourceconf2011-tokyofall

Note GENERIC kernel works on SL-C750/760/860 (and C1000/3x00) but for now
SL-C700 requires its own kernel with special KERNEL_BASE_PHYS address
due to zbsdmod.o loader restriction (probably caused its small 32MB RAM).

Reorganlization zlcd(4) and ztp(4) device attachments from nonaka@:
- ztp depends on zssp so attach ztp at zssp rather than pxaip
- split LCD backlight controls from zlcd(4) into new lcdctl device
to share it among forthcoming SL-C7x0 variants

branches: 1.9.2; 1.9.6;
more support SL-C1000.

branches: 1.8.10;
Added SD/MMC support from OpenBSD.
tested on i386, amd64 at current-users ML by pgoyette@.
tested on zaurus by myself.

Added kloader support.

branches: 1.6.4; 1.6.12; 1.6.18;
Add GPIO pins for USB cable type detection and glue for zusb devices for
config.

branches: 1.5.6;
Since files.wscons et al. are included by ~all ports anyway, include
them in the mi "files" file, and remove include statements from md files.
These shouldn't pull in additional kernel code when not in use, so it
shouldn't do any harm except a risk of namespace collisions which
should be easy to fix.

Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.3.2; 1.3.6;
Added support to detect AC adapter and charge battery.

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.12; 1.2.20; 1.2.22; 1.2.24;
Update from the latest Zaurus source from NONAKA Kimihiro.

- LCD screen and keyboard are working now.
- Add bootstrap loader.

Zaurus Port from OpenBSD by Nonaka Kimihiro
OK gimpy

revert previous; this was no typo.

fix typo (thanks gcc-6). There is no "pxaiis"

branches: 1.13.16;
armfpe is gone.

branches: 1.12.2;
Apply WM8731 support patch from TOYOKURA Atsushi, arranged by me.

- SL-C700: work fine
- SL-C750: attach failed
- SL-C860: not tested

branches: 1.11.6;
Add PXA25x based Zaurus SL-C700/750/760/860 support.

All porting work was done by TOYOKURA Atsushi, with
several minor adjustments for integration by me and nonaka@.

His SL-C700 first running NetBSD/zaurus was demonstrated on
NetBSD booth at Open Source Canference 2011 Tokyo/Fall:
http://www.NetBSD.org/gallery/events.html#opensourceconf2011-tokyofall

Note GENERIC kernel works on SL-C750/760/860 (and C1000/3x00) but for now
SL-C700 requires its own kernel with special KERNEL_BASE_PHYS address
due to zbsdmod.o loader restriction (probably caused its small 32MB RAM).

Reorganlization zlcd(4) and ztp(4) device attachments from nonaka@:
- ztp depends on zssp so attach ztp at zssp rather than pxaip
- split LCD backlight controls from zlcd(4) into new lcdctl device
to share it among forthcoming SL-C7x0 variants

branches: 1.9.2; 1.9.6;
more support SL-C1000.

branches: 1.8.10;
Added SD/MMC support from OpenBSD.
tested on i386, amd64 at current-users ML by pgoyette@.
tested on zaurus by myself.

Added kloader support.

branches: 1.6.4; 1.6.12; 1.6.18;
Add GPIO pins for USB cable type detection and glue for zusb devices for
config.

branches: 1.5.6;
Since files.wscons et al. are included by ~all ports anyway, include
them in the mi "files" file, and remove include statements from md files.
These shouldn't pull in additional kernel code when not in use, so it
shouldn't do any harm except a risk of namespace collisions which
should be easy to fix.

Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.3.2; 1.3.6;
Added support to detect AC adapter and charge battery.

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.12; 1.2.20; 1.2.22; 1.2.24;
Update from the latest Zaurus source from NONAKA Kimihiro.

- LCD screen and keyboard are working now.
- Add bootstrap loader.

Zaurus Port from OpenBSD by Nonaka Kimihiro
OK gimpy