Revert "Merge github.com:CyanogenMod/android_system_core into jb4.3"

This reverts commit dc103fd8657d1a2878ecabd82c78498f9a182c38, reversing
changes made to c37e6fe853925b630b414a5e55683bd6ca769765.
audio: add EVRCWB EVRCB to supported audio formats

 compressed format should also include EVRCWB and EVRCB

 CRs-Fixed: 516138

Change-Id: I64f40d3380cb4fa055e0c3d79db3acf57929405c
system/core: Add support for EVRCNW audio format

This change is needed to support EVRCNW audio format.

Change-Id: I161c2c24ca764ed291f59d17d0a2be443818a7aa
audio: Enumerations for audio usecases

-Add enumerations for audio usecases to handle concurrency

Change-Id: Ided13b37d269db3b4509f4058581d329b5f4739e