AVRCP: cached browsing related events and notify while device switch to active

For multiple A2dp connections, while switch media player, available/addressed
player changed events will notify to active device immediately. And cached these
browsing related events for inactive device, while it switch to active devive
again, available/addressed player changed events will notity to the new active
device.

CRs-Fixed: 2290406
Change-Id: I8be5132ddf770c7385e7fa1a22db171e690b2571
1 file changed