Escape "#" sign in XML file

Change-Id: Icd38abc4a0454ca949613d8c4bb528758cd990d8
diff --git a/java/res/xml-sw600dp/rows_phone.xml b/java/res/xml-sw600dp/rows_phone.xml
index dcc4fde..c4799bb 100644
--- a/java/res/xml-sw600dp/rows_phone.xml
+++ b/java/res/xml-sw600dp/rows_phone.xml
@@ -116,7 +116,7 @@
         <Key
             latin:keyStyle="num0KeyStyle" />
         <Key
-            latin:keyLabel="#"
+            latin:keyLabel="\#"
             latin:keyStyle="numKeyStyle" />
     </Row>
 </merge>