FM: reset preferred device to null while turning off FM app

Change-Id: Ia0d962084d01f0b9e04abcae8957302133bd671c
1 file changed
tree: e3063bc0c4f73e78c8782d666e44d0c6536447e8
  1. fm_hci/
  2. fmapp2/
  3. helium/
  4. jni/
  5. qcom/
  6. Android.mk