Bug 946589 - Remove 'ril.radio.preferredNetworkType' setting handler.
Enable RIL debug flag
Bug 843452 - Part 1-1: Refactor USSD
Bug 843452 - Part 1-2: Refactor OtaStatus
Bug 843452 - Part 1-3: Fix exitEmergencyCbMode
Bug 843452 - Part a-1: Gonk backend
Bug 843452 - Part a-2: Use GonkMobileConnectionProvider
Bug 843452 - Part b: Gonk backend IPC