FM: Ignore VOLUME_CHANGED_ACTION intent when

    fm is turned off.

 - when fm is turned off and fm app is running then
   if VOLUME_CHANGED_ACTION intent comes,
   no need to apply changed fm volume
 - set default FM OutPut Device to WiredHeadset

CRs-Fixed: 2374389

Change-Id: I8fccb09eab41f0007157b34af41d654a41a891da