PBAP: Check if notification is required for version upgrade.

This API is moved from PBAP Service code to PBAP bluetooth_ext
code. This is handled 500 ms post BOND_STATE_CHANGE is received
state is changed to BONDED.

Change-Id: I42623a712086c46c2dde9528bc0b7b44ee7d894f
CRs-Fixed: 2379721
1 file changed