hercules: Set default DPI

Set to 210 DPI.

Change-Id: I3ff0851807e19c2b3662f57840a01ca39209b310
diff --git a/system.prop b/system.prop
index aaac06f..3342b03 100644
--- a/system.prop
+++ b/system.prop
@@ -1,7 +1,7 @@
 #
 # system.prop for SGH-T989
 #
-
+ro.sf.lcd_density=210
 rild.libpath=/system/lib/libril-qc-qmi-1.so
 rild.libargs=-d /dev/smd0