Bluetooth: On Suspend ignore media task timer event

On Recieving Suspend confirmation from remote device,
Media task timer reload and tx_timer is made false,
hence media task will not be stopped at that instant.
Media task timer expires causing buffer to be allocated.
Changes done to ensure buffer is allocated only if tx_timer
is true.

Change-Id: I971a82cccc64ba033475ad532b096862968de942
1 file changed