Initialize all the cpu_sets array, not just the first max_cpus entries.
Initialize all the cpu_sets array, not just the first max_cpus entries.

This fixes the "ff1(users) == 21" panic when re-pmap_enter()ing the
kernel_map, if option DIAGNOSTIC is set, and your kernel is configured
for more cpus that you have on your board.

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