Change MAXDSIZ and MAXSSIZ to more reasonable values for a 64-bit architecture.
Change MAXDSIZ and MAXSSIZ to more reasonable values for a 64-bit architecture.

ok deraadt@, miod@

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