Audio: only force deep buffer flag for stereo low sampling rate content

To avoid conflicts with direct output selection for PCM content, do not force
deep buffer flag on multi channel, high sampling rate content.

Bug: 416410177
Test: atest AudioTrackTest
Flag: EXEMPT bug fix
Change-Id: I8c03775fb3adb50a7272c53d246b27490ead98f3
1 file changed