hal: add support to separate headset and headphones mixer backend

add backend apply support for voice headphone path

Test: local build
Bug: 112827678
Change-Id: I819ad66a657b2c2e6b86025bf506b37377c45cf5
Signed-off-by: yixuanjiang <yixuanjiang@google.com>
7 files changed
tree: 23ed8389e921e3a84a71266b22a37538d168c55c
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk