Support AUDIO_SOURCE_REMOTE_SUBMIX use case

In audio policy manager, accept recording for
  AUDIO_SOURCE_REMOTE_SUBMIX source, use always available
  AUDIO_DEVICE_IN_REMOTE_SUBMIX device.

Bug 33273024

Change-Id: Id7572fb94d1078f601b0a4ceeaffedb6c7f434f8
(cherry picked from commit 5606e36adba9e9a6a384caea364f1cc57b64a600)
1 file changed