audio: Support MR1 audio_policy

Change-Id: I1726d18f87fe6a6907bad61bc0de27e17c1237d1

Conflicts:
	audio/audio_policy_hal.cpp
STE Audio Fix [2/4]

Credits:
- @Paul-L for iplementation
- @percy-g2 for porting to Xperia 2012 devices