FM Radio: Add support for FM Radio in Android

Creating interface and framework for using FM Radio
RX and TX from different vendors.

Change-Id: I1a71aed01bfffdddfabf1cdfbfa3707cb1ed016b
Signed-off-by: Benn Porscke <benn.porscke@stericsson.com>

Conflicts:
	include/system/audio.h
Merge "FM Radio: Add support for FM Radio in Android" into cm-10.1
Merge branch 'cm-10.1' of github.com:CyanogenMod/android_system_core into cm-10.1