January Pi-platform-release merges

Change-Id: Ib132651097d7cc9f2cc2b6bb8787d77c2bf84c07
tree: e1a90504185eb46a018c6d6fddcb2dd4b70f767c
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk