Honour L3 switch on VS4k/90, even if we don't support glass console yet; from NetBSD.
Honour L3 switch on VS4k/90, even if we don't support glass console yet;
from NetBSD.

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