To make behavior consistent in the long run and refactor the code
into settingslib and call it from both Settings and SystemUI.
Bug: 110973964
Test: run testcase and do manual test - test case as below:
1. Testcase: packages/apps/Settings: -> ALL PASS
make RunSettingsRoboTests ROBOTEST_FILTER=SimStatusDialogControllerTest
2. Fake the service state's voice and data value,voice is out of service
and data is in-service,and then check service state and signal strength
at sim status page -> PASS
Change-Id: I4cc454b6b3d4242af4805e2878f9d46ce28649ad
c6d5a0cb6a