AudioTrack: Enable deep buffer under certain conditions

Under certain conditions, i.e. USAGE_MEDIA and
CONTENT_TYPE UNKNOWN, MUSIC, MOVIE and large buffers
we route the AudioTrack to deep buffer to save power.

Change-Id: Ibc8a31750999da842e36156f939448989ee50511
Test: Play Movies, CTS
Bug: 30687201
1 file changed