Whitelist telephony broadcasts for bground use

Whitelisted telephony broadcasts using the intent background flag.
Ensured that each broadcast was protected manually through cts test below.

Bug: 148181747
Bug: 151112539
Test: Switched on ActivityManagerDebugConfig.DEBUG_BACKGROUND_CHECK for SIM_STATE_CHANGED
Test:  android.telephony.cts.TelephonyProtectedBroadcastsTest
Merged-In: Id280fc2128b84dda2a8184dfa32ecc5b8f787afb
Change-Id: Id280fc2128b84dda2a8184dfa32ecc5b8f787afb