The Pi5 uses a different architecture for the GPIO pins, which is not compatible with previous models.
All GPIO functions are now handled by the RP1 [1] southbridge chip and the GPIO reading mechanism used in previous models doesn't work here.
Disabled drivers:
- gamecond and db9 (gamecondriver)
- mk_arcadejoystick_rpi
- snesdev
[1] https://www.raspberrypi.com/documentation/microcontrollers/rp1.html
Mostly drivers and supplementary packages - most install to md_inst which should be handled better now,
but also adjusted sixaxis to use md_build rather than a subfolder in md_build as it didn't seem to require it.
Introduce new DKMS helper function to consolidate DKMS management in
the relevant scriptmodules (customhidsony, mkarcadejoystick and xpad).
The helper will properly remove old versions of DKMS modules to prevent
"dkms.conf not found" errors occurring when removing a related scriptmodule
but an older DKMS module version was present.
Also fix the update hooks and ensure proper module reload when needed.
