omap4-common: wrap Moto's proprietary audio-HAL

Moto's audio-HAL is internally resampling when playing sound
via bluetooth SCO (voice dialer, google now). When doing so,
the returned value of written bytes is the arbitrary number
192 when in fact all samples have been written.

Wrap Motorola's audio-HAL to overload write() and catch
that scenario and fix the return-value.

Also prevent changing of device-settings when a read/write
is in progress, as this might cause the operation getting
stuck when the device is disabled at the wrong moment.

This should fix sporadic audio-losses caused by changing
mixer-settings while playing/recording.

Change-Id: I8d2e27f67f224dfb48f00801a64c4586b22c70ac
Enable use of FFMPEG codecs for extended formats
Add OMX_AUDIO_Coding and OMX_VIDEO_Coding

Copied from the stagefright-plugins project.
OMAP4 uses it's own OMX_Audio.h, OMX_Index.h, OMX_Video.h

Change-Id: I516f08b78298f5796325ec3ef12f5d7573a01b85
omap4-common: moto_audio_wrapper: wrap standby-functions

Also remove copies of always the same wrapper code, using macros
now.

Change-Id: I8b64eda6975be7493714349917a6439c3b8c1bb5
omap4-common: allow to set the voice-volume using an ICS blob

This fixes in-call volume on edison by redirecting calls to
set_voice_volume to the stock ICS audio-blob and additionally
calling it on set_mode and set_parameters. Other audio-functions
are still handled by the JB blob.

Change-Id: I6425dfd52202436036185f2bce4b5618d01adcaa
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_motorola_omap4-common into atrix