Map answered elsewhere telephony disconnect cause to telecom equivalent.

Bug: 29236416
Change-Id: I0abffcf849984f683bf3d0b21cce58dd30029597
diff --git a/src/com/android/services/telephony/DisconnectCauseUtil.java b/src/com/android/services/telephony/DisconnectCauseUtil.java
index f8fd918..049eaf6 100644
--- a/src/com/android/services/telephony/DisconnectCauseUtil.java
+++ b/src/com/android/services/telephony/DisconnectCauseUtil.java
@@ -140,6 +140,9 @@
             case android.telephony.DisconnectCause.CALL_PULLED:
                 return DisconnectCause.CALL_PULLED;
 
+            case android.telephony.DisconnectCause.ANSWERED_ELSEWHERE:
+                return DisconnectCause.ANSWERED_ELSEWHERE;
+
             default:
                 Log.w("DisconnectCauseUtil.toTelecomDisconnectCauseCode",
                         "Unrecognized Telephony DisconnectCause "