framework:When turn off of SoftAp immediately call turning ON SoftAp

Due to sub system restart,There is state change of softAp tether state machine
in tethered state triggering turnoff SoftAp this should be
follwed by turnon softap.

Change-Id: I93051f17bcaae72ae0694f1f23557cc1d3bea280

Conflicts:
	wifi/java/android/net/wifi/WifiStateMachine.java