fm: Support device loopback using set param.

 - Add support for FM device loopback and device routing
   using set param.
-Added code for listening VOLUME_CHANGED_ACTION.
-Clean up the audio path code for FM.
-Removed app loop back code.
-Removed redundant audio Route API Support.
-Removed Record Sink support.

Change-Id: I4751ba3c603d3e3eff3d3d65b4b1c4d3fbbc7f59
3 files changed
tree: 4377cb87938aefde74f042e842f92cd60365f99c
  1. fm_hci/
  2. fmapp2/
  3. helium/
  4. jni/
  5. qcom/
  6. Android.mk