InCallUI: Show emergency call number

- Show emergency call number when calling.

(cherry-picked from commit 6626a1eeac5a60b3074cc1ff70ae9691d9d133f8)

Change-Id: I6d895b8e40ae56974a1697079cc418f3ca10dc7d
CRs-Fixed: 1020091
diff --git a/InCallUI/res/values/qtistrings.xml b/InCallUI/res/values/qtistrings.xml
index b540b65..e4ed18f 100644
--- a/InCallUI/res/values/qtistrings.xml
+++ b/InCallUI/res/values/qtistrings.xml
@@ -31,6 +31,8 @@
 
 <!-- The xml contains Qti specific resource strings neede for any value added features. -->
 <resources>
+    <!-- Dtermine whether emergency calls should be marked. -->
+    <bool name="mark_emergency_call">true</bool>
     <!-- Call substate label -->
     <string name="call_substate_label"> Call substate - \u000a</string>
     <!-- Call substate label for call resumed -->