Send unsol_sim_status on radio_state change

Sim status changes based on radio state.
Need to notify new sim state whenever radio state changes

Change-Id: I8fef3a6ddf601647107e3059f2b2eb89a67242cf
diff --git a/reference-ril/reference-ril.c b/reference-ril/reference-ril.c
index 1b7a7bc..46ce492 100644
--- a/reference-ril/reference-ril.c
+++ b/reference-ril/reference-ril.c
@@ -2427,6 +2427,9 @@
     if (sState != oldState) {
         RIL_onUnsolicitedResponse (RIL_UNSOL_RESPONSE_RADIO_STATE_CHANGED,
                                     NULL, 0);
+        // Sim state can change as result of radio state change
+        RIL_onUnsolicitedResponse (RIL_UNSOL_RESPONSE_SIM_STATUS_CHANGED,
+                                    NULL, 0);
 
         /* FIXME onSimReady() and onRadioPowerOn() cannot be called
          * from the AT reader thread