Bug 990458 - Part 1: add updateNetworkInterface() API in idl. r=edgar
Bug 990458 - Part 2: ril changes to support updateNetworkInterface(). r=edgar
Bug 990458 - Part 3: WifiWorker changes to support updateNetworkInterface(). r=vchang
Bug 990458 - Part 4: WifiP2pManager changes to support updateNetworkInterface(). r=vchang
Bug 990458 - Part 5: implement updateNetworkInterface() and remove network-interface-state-changed event. r=edgar,vchang