Implement use of Device.setConnectedState/_7_1 HAL method

Add 'Device.setConnectedState' to libaudiohal. It tries
to use Device.setConnectedState_7_1 when supported, or
fallbacks to Device.setConnectedState.

Remove direct use of setParameters from the framework
code. Add required plumbing between APM and AF.

Bug: 211601178
Test: on the device, check that HAL still receives the update
Change-Id: Ic9ac6fbea6ceea7db504d9c962392d90e21f57cb