ds4drv joystick device is added and removed dynamically.

[leosmeira]

It would be great if inputs were created dynamically. Starting ds4drv at boot, it will always use js0. If we do not use the PS4 controller, some emulators will reserve the first player for js0. I think the best way is to run the dynamic creation as it is done in Sixad PS3.

[Ape]

I would be ok with merging some --dynamic option that makes ds4drv do this.

That said, I think games shouldn't assume that every joystick device is usable. People may have extra controllers attached and some of them might even be things like a wheel and pedals.