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: Gonk backend
Bug 843452 - Part b: Gonk backend IPC
Temp