DO NOT MERGE: Disconnect PBAP while disconnecting HFP profile.

PBAP profile is associated with HFP profile. Disconnect PBAP
profile while disconnecting HFP profile. We ever never doing this
and were expecting the remote end to do it. So when the user
disconnects a headset, we will end up with the ACL link still up
because PBAP has not been disconnected.

This is little bit of a hack till PBAP profile is converted to
use the new profile APIs.

Change-Id: I5f68b228fd5e607605928a52343ad4b86c58ac0b