Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Use DEVMETHOD_END macro defined in sys/bus.h instead of {0, 0} sentinel on device_method_t arrays

Reviewed by: cognet
Approved by: cognet

Add support for a few more Sony-specific ACPI features (default display
brightness, wired LAN power and bass gain), and update the description of
one previously unknown feature (display contrast). While here, expand on
a comment and remove two defines left over from an old version of the code.

Also update man page to document the above changes, and correct grammar.

PR: kern/127581

Import ACPICA 20090521.

Remove unused variables.

Found with: Coverity Prevent(tm)
CID: 544, 545

Add support for controlling the audio power

Tested on: VGN-SZ79TN

Document the cdp for controlling CD power.

Approved by: cognet

Canonize the include of acpi.h.

Fix SCM ID's.

Unify ACPI_DEBUG support for all OEM drivers under ACPI_OEM. Since more than
one will never be supported on the same platform, this does not hurt
debugging.

MFC after: 3 days

Attach the device at acpi_sony instead of acpi_snc. Rename some
internal variables as well to reflect the change.

Remove more debugging

After discussions with Nate, repo copy the acpi assist drivers from
i386 to dev/acpi_support. In theory, these devices could be found
other than in i386 machines only as amd64 becomes more popular. These
drivers don't appear to do anything i386 specific, so move them to
dev/acpi_support. Move config lines to files so that those
architectures that don't support kernel modules can build them into
the kernel. At the same time, rename acpi_snc to acpi_sony to follow
the lead of all the other specialty devices.

Merge 1.3 from acpi_snc.c: don't use return_VALUE() macro
Improve style(9) compliance.

Kill ACPI_FUNCTION_TRACE. It is killing the tinderbox build, and it
isn't worth adding to the modules lists that we have to hard code for
this to work. Since we print PID right away, we have a trace point
already.

Minor knf while I'm here.

Commit takawata-san's Sony Notebook Controller driver, integrated into
the tree. Small tweaks were made by myself to eliminate unnecessary
includes and some other minor issues. Last time I asked takawata-san
about this driver, he suggested I commit it.

Submitted by: takawata