Add _?RS methods evaluation to obtain additional heuristics and setting interrupt routing.  Fixes several HP & IBM machines.
Add _?RS methods evaluation to obtain additional heuristics and setting
interrupt routing.  Fixes several HP & IBM machines.

ok deraadt ketennis

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