Reduce NKMEMPAGES_MAX_DEFAULT_SUN4M, or we may allocate too much of kernel_map on large memory sun4m machines.
Reduce NKMEMPAGES_MAX_DEFAULT_SUN4M, or we may allocate too much of kernel_map
on large memory sun4m machines.

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