Add more debug msg when sending carrier config change.

We are seeing cases that carrier config change message is sent without
subId specified while it should. I suspect it's related to SIM STATE.

Bug: 153860050
Test: build
Change-Id: I39831b5842394556c04e81bc2dd41dafa4327ad9
diff --git a/src/com/android/phone/CarrierConfigLoader.java b/src/com/android/phone/CarrierConfigLoader.java
index e3a7de6..866e481 100644
--- a/src/com/android/phone/CarrierConfigLoader.java
+++ b/src/com/android/phone/CarrierConfigLoader.java
@@ -631,6 +631,8 @@
                         .createForSubscriptionId(subIds[0]);
                 simApplicationState = telMgr.getSimApplicationState();
             }
+            logd("Broadcast CARRIER_CONFIG_CHANGED for phone " + phoneId
+                    + " simApplicationState " + simApplicationState);
             // Include subId/carrier id extra only if SIM records are loaded
             if (simApplicationState != TelephonyManager.SIM_STATE_UNKNOWN
                     && simApplicationState != TelephonyManager.SIM_STATE_NOT_READY) {