[Driver] mk_arcade_joystick_rpi GPIO Driver

[Mootikins]

We've been testing the current version you have on GitHub, seems that the analog calibration program doesn't output the correct values to the .conf file. We had to change the axis values manually to get them to work. For reference, we were using the Switch Joy-Con analog sticks.

I will probably dive through your code on my fork (mootikins/mk_arcade_joystick_rpi) and will let you know if there's anything I can do.