m7-common: add BTLE permission file

Change-Id: I4963ef3b3f303ed2f7205117ee20162043972511
m7-common: set /proc/cmdline permissions

Change-Id: I2c7e3ca60af783c92f7ab5c591ec77816f58b16b
Merge "m7-common: add BTLE permission file" into cm-10.2
Merge remote-tracking branch 'upstream/cm-10.2' into cm-10.2