bring on a few changes from netbsd, such as better rx mbuf calculation, ram probe fix in byte vs word, M_IFMADDR vs M_IPMADDR. some knf
bring on a few changes from netbsd, such as better rx mbuf calculation, ram probe fix in byte vs word, M_IFMADDR vs M_IPMADDR. some knf

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