Allow media to be removed on last close even if the device used was the no-rewind device.  Ensure we re-detect media on first open even if media was present at boot.
Allow media to be removed on last close even if the device used was the
no-rewind device.  Ensure we re-detect media on first open even if media
was present at boot.

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