Fix to show both voice and data service state under sim status settings

Only voice registration state value was considered to show Service state
under phone settings. This was confusing when data is registered on the
device and signal strength icon is shown but voice reg state will be OOS.
Fix: Showing both voice and data registration states under "Service state"

Change-Id: Iffdf3a074845427877e9f350aeb0e7a53bfe8e1e
CRs-Fixed: 822051.