HID: usbhid: Fix for the WiiU adapter from Mayflash

The WiiU adapter from Mayflash (see
http://www.mayflash.com/Products/NINTENDOWiiU/W009.html) is not
working correctly.

The "XInput" mode works fine, the controller is recognized as a xbox
controller. But it is only possible to connect one controller with this method.

In "DInput" mode the device is recognized as some kind of mouse input but no
joystick is created. This commit will change this behavior with
HID_QUIRK_MULTI_INPUT to split the device into 4 input devices so that it will
also create joysticks in /dev/input/js*.

Signed-off-by: Oliver Schmitt <voltumna@gmx.net>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-ids.h

@@ -288,6 +288,7 @@
 #define USB_DEVICE_ID_DMI_ENC		0x5fab
 
 #define USB_VENDOR_ID_DRAGONRISE	0x0079
+#define USB_DEVICE_ID_DRAGONRISE_WIIU	0x1800
 
 #define USB_VENDOR_ID_DWAV		0x0eef
 #define USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER	0x0001