am 2c921376: am f70ffb40: hal: Add support for pre-processing effects

* commit '2c9213763f7b7423c26dacbc59c61635bf01d4f4':
  hal: Add support for pre-processing effects
tree: 59f2b0c78237790b6aa4d070610020eca8ab6f18
  1. hal/
  2. legacy/
  3. voice_processing/
  4. Android.mk