Add "tv" density for 720p screens.

Change-Id: I028969b007f2fceea66947d77a2ae31ef1d1a630
diff --git a/include/utils/ResourceTypes.h b/include/utils/ResourceTypes.h
index 884a3e1..d1d9844 100644
--- a/include/utils/ResourceTypes.h
+++ b/include/utils/ResourceTypes.h
@@ -841,6 +841,7 @@
         DENSITY_DEFAULT = ACONFIGURATION_DENSITY_DEFAULT,
         DENSITY_LOW = ACONFIGURATION_DENSITY_LOW,
         DENSITY_MEDIUM = ACONFIGURATION_DENSITY_MEDIUM,
+        DENSITY_TV = ACONFIGURATION_DENSITY_TV,
         DENSITY_HIGH = ACONFIGURATION_DENSITY_HIGH,
         DENSITY_NONE = ACONFIGURATION_DENSITY_NONE
     };