arndale: Add arndale specific properties

This patch adds arndale specific android system
properties, namely, ro.sf.lcd_density for pixel
density and debug.sf.no_hw_vsync for generating
sw vsync

Change-Id: Ib837750b26215f4f7af445ddc4d608dcbd5532f7
Signed-off-by: Pranav Tipnis <pranav.tipnis@linaro.org>
diff --git a/system.prop b/system.prop
new file mode 100644
index 0000000..b9d1dc6
--- /dev/null
+++ b/system.prop
@@ -0,0 +1,6 @@
+#
+# system.prop
+#
+
+ro.sf.lcd_density=240
+debug.sf.no_hw_vsync=1