Added support for the 1.2 IRadio APIs that support IWLAN handover.
Test: Telephony sanity tests
Bug: 64132030
Merged-In: I8c962bb45bc4d42610faa32f0ee36080e8e6cb65
Change-Id: I8c962bb45bc4d42610faa32f0ee36080e8e6cb65
(cherry picked from commit 08063d6c1b)