Bluetooth: OPP: Restart OPP service on ACL disconnect

Whenever OPP service is forcefully stopped, it will get
restarted on reception of ACL disconnected intent from frameworks.

Change-Id: I8b976c44dc5edd62288fd87abd84a1831e820957
(cherry picked from commit a4dacdb77cb4d73ff38c14f3bc48b1a6ebd919fc)
(cherry picked from commit 40a9763ae1528417d5f631eda66930206c986fa0)
(cherry picked from commit b0ef62b372cf4228ba4716e15c12c154c3dd1b8a)