Squashed commit of audio:

commit 8ad0784de683fe96e2533794f9a0e74ddf173ccb
Author: Krishnankutty Kolathappilly <kkolat@codeaurora.org>
Date:   Tue Jul 16 19:14:10 2013 -0700

    audio: Enumerations for audio usecases

    -Add enumerations for audio usecases to handle concurrency

    Change-Id: Ided13b37d269db3b4509f4058581d329b5f4739e

commit f0defec03a99c7b771fd43f5928be5ddff8d3b5d
Author: Vidyakumar Athota <vathota@codeaurora.org>
Date:   Fri Jul 26 12:23:00 2013 -0700

    system/core: Add support for EVRCNW audio format

    This change is needed to support EVRCNW audio format.

    Change-Id: I161c2c24ca764ed291f59d17d0a2be443818a7aa

commit 968dfe3e584361c04a8379e87ce802669626fab9
Author: Shreyas Nagasandra Chandrasekhar <snagas@codeaurora.org>
Date:   Fri Jul 26 20:54:17 2013 +0530

    audio: add EVRCWB EVRCB to supported audio formats

     compressed format should also include EVRCWB and EVRCB

     CRs-Fixed: 516138

    Change-Id: I64f40d3380cb4fa055e0c3d79db3acf57929405c

Change-Id: Ie67b51e5cb06ac25575347788f96eaeb6d0da2d7