Integrate PERFORM_IMS_SINGLE_REGISTRATION into permission checks

1) Move to checking PERFORM_IMS_SINGLE_REGISTRATION API check instead
of further overloading phone state permissions.
2) Add permissions to test app

Bug: 168923956
Bug: 173652571
Bug: 149426399
Test: atest CtsTelephonyTestCases; use RcsTestApp to check perms
Change-Id: I9ebc9416f177b030ae531300b3024f31ddb07ca2
5 files changed