A joystick is not a storage device, and you do not "mount" it. Therefore, you can't and shouldn't put a line in /etc/fstab for it. Also, you don't need to add the usb-storage module for a joystick. The lines that should be added to /etc/rc.d/rc.local are:
You may need to add the iforce and analog lines too, but not for basic usb joystick functionality.