Change 'idx' to 'index' in SubscriptionManager & TelephonyManager apis.

Bug: 35767068
Test: No build failure.
Change-Id: I3b15901ff18742b5e99f03e74a6412d352461458
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java b/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
index 1f58d4c..f8d1bfb 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
@@ -1582,7 +1582,7 @@
      */
     public void reportSimUnlocked(int subId) {
         if (DEBUG_SIM_STATES) Log.v(TAG, "reportSimUnlocked(subId=" + subId + ")");
-        int slotId = SubscriptionManager.getSlotId(subId);
+        int slotId = SubscriptionManager.getSlotIndex(subId);
         handleSimStateChange(subId, slotId, State.READY);
     }
 
@@ -1751,7 +1751,7 @@
         for (int i = 0; i < list.size(); i++) {
             final SubscriptionInfo info = list.get(i);
             final int id = info.getSubscriptionId();
-            int slotId = SubscriptionManager.getSlotId(id);
+            int slotId = SubscriptionManager.getSlotIndex(id);
             if (state == getSimState(id) && bestSlotId > slotId ) {
                 resultId = id;
                 bestSlotId = slotId;