during probe there is no need to map the whole hpa space. only rom is needed. also do not map too much of rom
during probe there is no need to map the whole hpa space. only rom is needed. also do not map too much of rom

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