Get the product version of a joystick, if available.
int device_index);Uint16 SDL_JoystickGetDeviceProductVersion(
the index of the joystick to query (the N'th joystick on the system
Returns the product version of the selected joystick. If called on an invalid index, this function returns zero
This can be called before any joysticks are opened. If the product version isn't available this function returns 0.