Adds a Disconnect Cause for Emergency Redial

The radio has the ability to send back a "redial on the other slot"
DisconnectCause. This adds that DisconnectCause definition.

Bug: 31498841
Change-Id: I9a59cc81ba03562531b0445e3acb5eeec99b1aba
diff --git a/telephony/java/android/telephony/DisconnectCause.java b/telephony/java/android/telephony/DisconnectCause.java
index f5e422d..0334254 100644
--- a/telephony/java/android/telephony/DisconnectCause.java
+++ b/telephony/java/android/telephony/DisconnectCause.java
@@ -226,6 +226,13 @@
      */
     public static final int DATA_LIMIT_REACHED = 55;
 
+    /**
+     * The emergency call was terminated because it was dialed on the wrong SIM slot.
+     * The call needs to be redialed the other slot.
+     * {@hide}
+     */
+    public static final int DIALED_ON_WRONG_SLOT = 56;
+
     //*********************************************************************************************
     // When adding a disconnect type:
     // 1) Please assign the new type the next id value below.
@@ -234,14 +241,14 @@
     // 4) Update toString() with the newly added disconnect type.
     // 5) Update android.telecom.DisconnectCauseUtil with any mappings to a telecom.DisconnectCause.
     //
-    // NextId: 56
+    // NextId: 57
     //*********************************************************************************************
 
     /** Smallest valid value for call disconnect codes. */
     public static final int MINIMUM_VALID_VALUE = NOT_DISCONNECTED;
 
     /** Largest valid value for call disconnect codes. */
-    public static final int MAXIMUM_VALID_VALUE = DATA_LIMIT_REACHED;
+    public static final int MAXIMUM_VALID_VALUE = DIALED_ON_WRONG_SLOT;
 
     /** Private constructor to avoid class instantiation. */
     private DisconnectCause() {
@@ -361,6 +368,8 @@
             return "DATA_DISABLED";
         case DATA_LIMIT_REACHED:
             return "DATA_LIMIT_REACHED";
+        case DIALED_ON_WRONG_SLOT:
+            return "DIALED_ON_WRONG_SLOT";
         default:
             return "INVALID: " + cause;
         }