audio: derive sound device for concurrent playback usecases
am: 2d809e0d10

Change-Id: I3e24ddaf5d21d25925d282880c539e76de57fc83
tree: f4cd12084f9c77614586ee6aa285b22f9e60df0f
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk