audio hal: fix voip volume update in check_and_route_playback_usecases()

When audio-playback-voip use case device shares the same
backend as the new device, audio-playback-voip device is switched,
and voip volume must be re-applied.

Bug: 167288716
Test: repro steps in bug.
Change-Id: I61692d7d5acf5d3147c32fc22761d1ed75c487a2
1 file changed
tree: 22c052ee9c11ad9875d2f4e03dc776d670e88e91
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk
  7. OWNERS