kernel: Sync ACPICA with Intel's version 20140325.

kernel: Sync ACPICA with Intel's version 20140325.

As far as I can see, the most important change is a fix for the auto-
serialization of control methods so that the currently executing AML
SyncLevel is ignored when invoking such a method. This fixes an issue
seen in some systems showing AE_AML_MUTEX exceptions since 20140214
which had to set hw.acpi.auto_serialize_methods to 0 to work around
the issue.

This was actually reported for DragonFly by Andrey Oktyabrskiy (see
http://lists.dragonflybsd.org/pipermail/users/2014-February/109376.html).

See sys/contrib/dev/acpica/changes.txt for a complete list of all
changes.