FM: Set setActive() for media session as false on FMRadio focus loss

Set setActve() for media session as false on FMRadio focus loss so that
FMRadio doesn't remain active(responsive to play/pause) when we open
other application and gain focus.

Change-Id: Ice884f9904d3100ffc963cab4b23922b2d647c29
CRs-Fixed: 1033162
1 file changed