m7: Add digital dock routes for LPA and tunnel

 * For supporting music playback over USB.

Change-Id: I07ab7297a7b35b616b02bb775aaa6a2b6dccb331
m7-common: add LPA USB Proxy use case

Change-Id: I979d6ca58ace85bc30a05553705ddae25caadb72
m7-common: enable option to set button brightness

Change-Id: I2aab2fec2a5fa8f6907242498c23029d77b2f81c

Conflicts:
	rootdir/etc/init.qcom.rc
Merge "m7: send phone apps status to proximity sensor" into cm-10.2
m7-common: HTC camera expects insecure MM heap

Change-Id: Ie31f11c39b12d7569196ea63b2f3db7b84697945
m7-common: fix copy paste

Change-Id: I0d703057b5ca8f8faccb8a609f9ceabb3ad382d5