Input: xpad - use correct product id for x360w controllers

BugLink: http://bugs.launchpad.net/bugs/1658099

commit b6fc513 upstream.

currently the controllers get the same product id as the wireless
receiver. However the controllers actually have their own product id.

The patch makes the driver expose the same product id as the windows
driver.

This improves compatibility when running applications with WINE.

see paroj/xpad#54

Signed-off-by: Pavel Rojtberg <rojtberg@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

drivers/input/joystick/xpad.c

@@ -1376,6 +1376,12 @@ static int xpad_init_input(struct usb_xpad *xpad)
 	input_dev->name = xpad->name;
 	input_dev->phys = xpad->phys;
 	usb_to_input_id(xpad->udev, &input_dev->id);
+
+	if (xpad->xtype == XTYPE_XBOX360W) {
+		/* x360w controllers and the receiver have different ids */
+		input_dev->id.product = 0x02a1;
+	}
+
 	input_dev->dev.parent = &xpad->intf->dev;
 
 	input_set_drvdata(input_dev, xpad);