Add wake support to acpihpet(4).
Add wake support to acpihpet(4).

Patch initially from mlarkin@. KNF and refactoring by me. Okay deraadt@.

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