This device tree overlay removes the need for the userspace daemon retrogame
to process button press on GamePi43, reducing input latency and removes a point of failure (I don't really trust that daemon from Adafruit to be error-free).
To compile the dts, install dtc
and then run
dtc -I dts -O dtb -o gamepi43.dtbo gamepi43.dts
To install the overlay, copy the resulting gamepi43.dtbo
to /boot/overlays/
, and then add