Thanks for the quick help. I built a kernel with your fix.
The system is booting up with a warning, now.
...
scsibus3 at softraid0: 256 targets
sd2 at scsibus3 targ 1 lun 0:
sd2: 122103MB, 512 bytes/sector, 250067198 sectors
root on sd2a (da12fadb67cf7a4d.a) swap on sd2b dump on sd2b
drm : drm_WA
> Synopsis: OpenBSD 6.8 stops booting after 'pckbd_enable: command error'
> Category:
> Environment:
System : OpenBSD 6.8
Details : OpenBSD 6.8 (GENERIC.MP) #98: Sun Oct 4 18:13:26 MDT 2020
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/com