Detect touchscreen with dt2w node

rw-system.sh

@@ -462,3 +462,10 @@ if [ -c /dev/dsm ];then
     chcon u:object_r:teecd_data_file_system:s0 /data/sec_storage_data
     mount /data/sec_storage_data /sec_storage
 fi
+
+#Try to detect DT2W
+for ev in $(cd /sys/class/input;echo event*);do
+	if [ -f "/sys/class/input/$ev/device/device/gesture_mask" ];then
+		setprop persist.sys.phh.dt2w_evnode /dev/input/$ev
+	fi
+done