I’d like to thank @correctmost for finding a work-around to this issue in #295.
Edit
usr/lib/initcpio/install/block
comment out
add_checked_modules '/drivers/mfd/'
then run
sudo mkinitcpio -P
and reboot.
Nice to have a working laptop again. When the touchpad broke (i2c_designware) it also prevented standby from working correctly (system would lockup when resuming from standby).