* commit 'c8a09d543429e1a937a13e2173c96255579495f7': Separate VoLTE and VT configurations to enable devices/carriers to have VoLTE without VT.
* commit 'c8a09d543429e1a937a13e2173c96255579495f7': Separate VoLTE and VT configurations to enable devices/carriers to have VoLTE without VT.