Enable USB dock audio support

Change-Id: I71b148ae6ab333879cc05ab98d97f4ef546065de
audio_policy: add USB dock audio output device

Change-Id: Iaa8ce50312e4bba41d54a8a7c1684a64958f7c04
Revert "Enable USB dock audio support"

Removed from audio-caf

This reverts commit ae65068700e8c80a26ef7d8e1c2ab841d0c5a7eb.

Change-Id: I2f51efcbdc1de2eb0bea3ca661653d06b757add0
Merge branch 'cm-10.2' of https://github.com/CyanogenMod/android_device_motorola_msm8960-common into pa-cm-10.2