Add a new ImsReasonInfo code

For IKEv2 authentication failure during ePDG tunnel establishment.

Test: make
Change-Id: I1d10efac806abfaa80d9875b908385f7732f293a

telephony/java/com/android/ims/ImsReasonInfo.java

@@ -312,6 +312,12 @@ public class ImsReasonInfo implements Parcelable {
      */
     public static final int CODE_WIFI_LOST = 1407;
 
+    /**
+     * Indicates the registration attempt on IWLAN failed due to IKEv2 authetication failure
+     * during tunnel establishment.
+     */
+    public static final int CODE_IKEV2_AUTH_FAILURE = 1408;
+
     /**
      * Network string error messages.
      * mExtraMessage may have these values.