Fix connection state broadcasts

- HFP was flipping states in case of timeout
- A2DP was not sending a disconnect when the native changed its mind
  about which device was actually connected

Change-Id: Ic89292fe0d6730b8bbbc4746f8e5afabcd59a943
(cherry picked from commit d7e1c13d177fac7d6ef1dd36663f362470372070)