Address a couple issues in Khmer layout

bug: 6910993
Change-Id: I649b2d37a4eca75e2fc98e8c7f6a3dad20339864
diff --git a/java/res/xml/rowkeys_khmer3.xml b/java/res/xml/rowkeys_khmer3.xml
index 5d55b9c..ff6c9ca 100644
--- a/java/res/xml/rowkeys_khmer3.xml
+++ b/java/res/xml/rowkeys_khmer3.xml
@@ -39,7 +39,7 @@
                 latin:keyLabelFlags="fontNormal" />
             <!-- U+1792: "ធ" KHMER LETTER THO -->
             <Key
-                latin:keyLabel="&#x178C;"
+                latin:keyLabel="&#x1792;"
                 latin:keyLabelFlags="fontNormal" />
             <!-- U+17A2: "អ" KHMER LETTER QA -->
             <Key