Input: usbtouchscreen - add support for LG Flatron T1710B

I've recently got my hands on a LG Flatron T1710B touchscreen.
As other LG products, this seems to use the ITM panel.

Signed-off-by: Glenn Sommer <gsommer@datanordisk.dk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/touchscreen/usbtouchscreen.c

@@ -178,6 +178,7 @@ static const struct usb_device_id usbtouch_devices[] = {
 
 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
 	{USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
+	{USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
 #endif
 
 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO