hal: Add check for all a2dp devices instead default a2dp

Only A2DP is being checked instead of all a2dp
devices(like BTspeaker/BT car kit).
This is to ensure that any non-BT A2DP stream will
disconnect and resume correctly.

Change-Id: I1bd089114d7609bca0eb1c86f08ecc7bb86b8855
1 file changed