avrcp: Change device_map_lock into a recursive mutex

ConnectionHandler::CleanUp take the lock and calls
ConnectionHandler::AcceptorControlCB with AVRC_CLOSE_IND_EVT
which also takes the lock, so use a recursive_mutex.

Bug: 293248033
Bug: 292871599
Bug: 294942307
Bug: 294951334
Bug: 256938279
Test: manual, check that the disconnection sound effect
 of the headset is played when Bluetooth is turned off
Change-Id: I7e9a517c7c16937c549f851d5d535a67e33a90df