let device_register match scsi devices to anything hanging off a scsibus. this lets path drivers get matched instead of just sd(4).
let device_register match scsi devices to anything hanging off a
scsibus. this lets path drivers get matched instead of just sd(4).

ask mpath to maybe swap a path with a disk via mpath.

ok deraadt@

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