In ECBM Mode, Rild crash leads to phone app crash

1.In ECBM mode, when rild crashes com.android.phone is also crashing.
The reason was ANR in com.android.phone due to REQ_IS_IDLE_SYNC
message is not handled in DcSwitchStateMachine when in Emergency
state.

2. To avoid possible hangup while diconnecting data on non active
phoneid or handling simultaneous DSDS request when device is in
Emergency State, REQ_IS_IDLE_OR_DETACHING_STATE is also handled.

CRs-Fixed: 903479, 903476

Conflicts:
	src/java/com/android/internal/telephony/dataconnection/DcSwitchStateMachine.java

Change-Id: Ifeca20970ff87671357aa1b36250f01706e2f29c