Query PhoneState on Incoming/Outgoing Connection

Use case:
1. Connect BT headset during active call.
2. Check for call value updates in CIND response.

Failure:
call indicator is not set in CIND response to headset

Root cause:
We don't have latest call state update from Telephony
until SLC.

Fix:
Query current phone state on incoming connection from
headset, to update CIND indicators during SLC connection
set-up for AG.

Change-Id: I723506356434a9967769c59c30d058da7b39b3d9