HFP: Auto connect for HFP only device

When only HFP active device is changed and
no A2DP device is connected, the priority
to auto connect is set for HFP device.
Therefore auto-connection is initiated HFP
device.

CRs-Fixed: 2278397
Change-Id: Id437a3b33ee6124b42b7b28c66db8388c7264a5d
1 file changed