leaudio: Improve isConnected() function

This follows HearingAidStateMachine design

Bug: 150670922
Tag: #feature
Sponsor: jpawlowski@
Test: atest BluetoothInstrumentationTests

Change-Id: I6d4931e471c2ad269d875d0e326ffa3e5d88ad13
1 file changed
tree: 91515e9f0c6cda1fe2bca1a533c954b6f1925e31
  1. android/