Improve use of Link-E, making it automatically exit IAP and ARM modes, as well as try very aggressively to reset the processor if it can't attach.

These are being assigned to the plugdev group, but everything was always writeable.

This makes it so the mode is now 660 so the plugdev group is respected.

We shouldn't change the hidraw rules of every device here.

These don't work otherwise on my setup.

2. Delay and don't clear halt request when unbricking.