Some recent IOC3 do not have Dallas timekeepers, so perform a few more tests before deciding to attach dsrtc.
Some recent IOC3 do not have Dallas timekeepers, so perform a few more tests
before deciding to attach dsrtc.

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