Merge changes from topic "b1c1-WAVES-effect" into pi-dev

* changes:
  audio: porting MAXXAUDIO
  audio: Add API to set audio calibration
tree: 21a3dda72f44c126e8109e6e368343b676c0e083
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk