Add NWS-4000 support.

Based on nonaka@'s porting effort back in 2002.
See announcement on port-newsmips@ for more details:
http://mail-index.netbsd.org/port-newsmips/2018/10/13/msg000231.html

branches: 1.30.26;
Include sljit files.

branches: 1.29.10;
move common/bus_dma/ -> dev/bus_dma/

branches: 1.28.4; 1.28.14;
Merge forward matt-nb5-mips64
Adapt to new interrupt/spl framework

branches: 1.27.4; 1.27.6; 1.27.8;
Use bus_dmamem_common.

branches: 1.26.10; 1.26.28;
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.

branches: 1.25.50;
merge ktrace-lwp.

branches: 1.24.16;
Switch to use MI mk48txx(4) and todr(9) for MK48T02 todclocks on newsmips.

Since everyone uses clock_subr.c (or should, if they don't currently),
list it in conf/files instead of in every port's files.*.

branches: 1.22.2;
Add MI softintr(9) support with common mips/softintr.c.

now that mem_no is emitted by config(8), there is no reason to keep
copy of more or less identical iskmemdev() for every arch; move the function
to spec_vnop.c, and g/c machine-dependant copies

Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.

- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.

- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.

branches: 1.19.2;
* Move the mii_bitbang attribute into dev/mii/files.mii
* Pull in dev/mii/files.mii from conf/files, rather than playing
the magic "files include order" dance in N machine-dependent
configuration definitions.

All the mips ports had an identical procfs_machdep.c, so use a common
file under arch/mips/mips.

branches: 1.17.4; 1.17.8;
Move NEWS keymap file into MI place to share with news68k.

Add machdep file for procfs. Currently only used for linux-style
/proc/cpuinfo (only active when procfs is mounted with -o linux).
For ports other than the i386 this currently produces an empty
string.

Screen console works now.

Keyboard and mouse support for news5000.

Switch to wscons.

"xa" frame buffer driver.

NEWS5000 internal SCSI driver.

Switch to MI md_root.c. Checked by booting INSTALL kernel.

add Tulip (tlp) at apbus

Add the RAIDframe device major to the machine-dependent config files
so that the right entries get added to dev_name2blk[]. Needed for / on RAID.
(Whoops! I missed checking these in when adding the RAID_AUTOCONFIG stuff.)

First cut of news5000 support.
Mostly from SHIMIZU Ryo <dejiko@di.gi.charat.org>.

Use dev/clock_subr.c.

Support md root for INSTALL.

branches: 1.4.2; 1.4.4; 1.4.8;
Only declare block major numbers for devices which can be the root device.

branches: 1.3.10;
adapt to LANCE driver split

Rename NetBSD/news to NetBSD/newsmips.

Initial import of NetBSD/news.