Add callingPackage checking with uid in getPhoneAccount method in Telecom

Test: manual verified with test app; unit test
Bug: 196406138
Change-Id: I2cfa653e619f522fecdcd01cd080078f6a1ab1f3
Merged-In: I2cfa653e619f522fecdcd01cd080078f6a1ab1f3
2 files changed