Merge "AudioPolicyService: Acquire mutex for SoundTriggerSession" into mnc-dev am: e472e51100 am: 0a8a0c4474 am: ae465be454 am: b995c31415 am: d08327d1a2 am: 74f84d987b am: 355a18f58d am: c8f3cf02eb am: 8cad724158 am: 122ec92c42 am: fa5a0cedea
am: 19f0196da3

Change-Id: Ia47b4f3d752e74ba9c4bf02ccb74c33c9c5f9dd4