Support disableAdditionalMoreKeys and disableKeyLabelHint

Change-Id: Idfa586417acd4a223380d52f044e3a86eb780b21
diff --git a/java/res/xml-sw768dp/rows_bulgarian.xml b/java/res/xml-sw768dp/rows_bulgarian.xml
index 7fac3ed..5f59f70 100644
--- a/java/res/xml-sw768dp/rows_bulgarian.xml
+++ b/java/res/xml-sw768dp/rows_bulgarian.xml
@@ -30,7 +30,8 @@
             latin:keyStyle="tabKeyStyle"
             latin:keyLabelFlags="alignLeft" />
         <include
-            latin:keyboardLayout="@xml/rowkeys_bulgarian1" />
+            latin:keyboardLayout="@xml/rowkeys_bulgarian1"
+            latin:keyLabelFlags="disableAdditionalMoreKeys|disableKeyHintLabel" />
         <Key
             latin:keyStyle="deleteKeyStyle"
             latin:keyWidth="fillBoth" />