Get the firmware version of an opened joystick, if available.
Uint16 SDL_JoystickGetFirmwareVersion(SDL_Joystick *joystick);
|joystick||the SDL_Joystick obtained from SDL_JoystickOpen()|
Returns the firmware version of the selected joystick, or 0 if unavailable.
If the firmware version isn't available this function returns 0.
This function is available since SDL 2.24.0.