audio_policy: Don't separate A2DP output

Change-Id: Ided30c91b26d25d0fec0e24437664515e9ef5be4
fstab: use by-name

* yes, this means you need a compatible recovery

Change-Id: I5f672113a849440dc530fd9217c1ce36b8d8096c
sepolicy: set seclabel in init

Change-Id: I8f21efcfc2c0a161356294246dbb63685e0ad38a