Place dial request for Emergency call soon after Radio is on.

In the current design, when airplane mode is ON and emergency
call is made, RadioOnStateListener listens for Service State
change events and then irrespective of service state if RADIO
is ON,it will place emergency call.But receiving of service
state events from modem will take time.

To overcome this delay, register for radioOff and radioOn events
in RadioOnStateListener.java, and once RADIO ON event is received
place emergency call immediately without waiting for ServiceState.

Bug:145788899
Change-Id: I34ec6d8fc43423f48b5ff930780882bb601303c0
4 files changed