Support for fetching PSC of serving cell.

Instead of adding a new RIL command, just extend RIL_REQUEST_REGISTRATION_STATE.

Bug: 2465036
Change-Id: I36c3a7b730cace66621fc513773ec97c453ea619
3 files changed
tree: 1a412f9d1ffb73e49fd8c01838201f63450d4968
  1. include/
  2. libril/
  3. mock-ril/
  4. reference-ril/
  5. rild/
  6. CleanSpec.mk