Add Linux mapping for 8BitDo Pro 2 Wired Controller for Xbox Without these mappings, this controller "kinda" works out of the box: - `SDL_GameControllerMapping()` works because it will notice "Xbox" in the name and use the default XInput mappings - `SDL_GameControllerMappingForGUID()` will not find any mapping lsusb: ``` ID 2dc8:2000 8BitDo 8BitDo Pro 2 Wired Controller for Xbox ``` In Linux this controller is supported by two drivers: - `xpad` (built-in to the kernel), exposes the controller name from the USB descriptor and the GUID starts with 03 (0x03 = BUS_USB) - `xone` (https://github.com/medusalix/xone), exposes a virtual controller which is always named "Microsoft X-Box One pad" and the GUID starts with 06 (0x06 = BUS_VIRTUAL) This commit adds the 2 GUIDs from both drivers so mappings will always be found and the real controller name will always be reported.