Reapplication of rev 1.49.
Reapplication of rev 1.49.

Save SOF (frame timing adjustment) before the very first host controller
reset, rather than at suspend/resume, otherwise any BIOS inserted value
is lost immediately.

ok dlg@

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