Add Lohit-Tamil.ttf and Lohit-Bengali.ttf to Fallback list

Bug: 5370370

Lohit-Tamil.ttf and Lohit-Bengali.ttf were added to the system
image in CL 4baaa05f0383bee670a0bebc177b94a1c119eab7 but did not
get added to the fallback_fonts.xml file, so skia will never find
these fonts.  This CL will not increase the sysetm image size, it
will simply let Skia find these fonts.

Change-Id: I85b3c191c278181ee36a88841832dcfba0bab886
diff --git a/data/fonts/fallback_fonts.xml b/data/fonts/fallback_fonts.xml
index 881233a..e23004b 100644
--- a/data/fonts/fallback_fonts.xml
+++ b/data/fonts/fallback_fonts.xml
@@ -61,6 +61,16 @@
     </family>
     <family>
         <fileset>
+            <file>Lohit-Bengali.ttf</file>
+        </fileset>
+    </family>
+    <family>
+        <fileset>
+            <file>Lohit-Tamil.ttf</file>
+        </fileset>
+    </family>
+    <family>
+        <fileset>
             <file>DroidSansFallback.ttf</file>
         </fileset>
     </family>