lpc+kbd: Disable circle+1 power on cmd when SoM is already on

See merge request reform/reform!27

reform2-lpc-fw: add spi support to firmware

See merge request reform/reform!28

New keyboard and trackball revisions

See merge request reform/reform!30

Keyboard powersave fix

See merge request reform/reform!26

I encountered this a few too many times when messing around with the
menu. Previously, this would power-cycle the machine, which seems like
an undesirable behaviour.

Enhanced keyboard firmware

See merge request reform/reform!25