Fix for the new fast PII-400 machines.  This makes them work, and does not seem to have an adverse affect on other machines.  Thanks to martin@ for testing on the PII-400 (wish I had one...), and millert@ for testing on his machines (and finding a bug in my original fix).
Fix for the new fast PII-400 machines.  This makes them work, and does not
seem to have an adverse affect on other machines.  Thanks to martin@ for
testing on the PII-400 (wish I had one...), and millert@ for testing on
his machines (and finding a bug in my original fix).

pccons & pckbd need fixing too...

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars