Add support for the TV DPI.

This is the dpi for the 720p resolution used by
Google TV. It's a special dpi, not a bucket dpi like
the other one so the handling is a bit different.

Change-Id: Id9a245422855c2dba82c267beca203006f6fd864
diff --git a/android/hw-lcd.h b/android/hw-lcd.h
index c902b13..babba3f 100644
--- a/android/hw-lcd.h
+++ b/android/hw-lcd.h
@@ -14,6 +14,7 @@
 
 #define  LCD_DENSITY_LDPI      120
 #define  LCD_DENSITY_MDPI      160
+#define  LCD_DENSITY_TVDPI     213
 #define  LCD_DENSITY_HDPI      240
 #define  LCD_DENSITY_XHDPI     320