ADHD: Finish making FIFO generic
Details
This change finishes up making the FIFO into a generic system.
o 'fifo_t' is now a FIFO handle. The mutex is directly associated
with the FIFO.
o 'fifo_t' now used for all FIFO-related functions.
o Expanded comments in fifo.h
o Introduced a 'workfifo' for generic processing.
Testing
Built for x86-mario
Built for tegra2_aebl
Verified gavd still deals with headphone switching on Arm machines.
gavd is still a nop on x86 machines, and needs no further testing.
BUG=chromium-os:19558
TEST=See above.
Change-Id: I76bbc7d39896aeabb1b2007c90a51c1dc298d11d
Signed-off-by: Taylor Hutt <thutt@chromium.org>
7 files changed
