hal: Add support for sound trigger feature

Add sound trigger extension to communicate with sound trigger hal
for reading keyword data and manage concurrencies.

Change-Id: Iebbc0bf60be3bb12d752a1c905f71e9ea14fbf46
5 files changed
tree: 0b6e65edc2e2654220b8a51dbb32792db0fe2089
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk