Added cross sim calling settings support

Added a telephony provider entry for storing the
user's settings.

Fix: 173250681
Test: Manual
Merged-In: I081c7e5fcc98f51a97c41a0a9a2b9b628c8d0415
Change-Id: I081c7e5fcc98f51a97c41a0a9a2b9b628c8d0415