use scsi_detach_target when a device dissapears, rather than using config_detach and cleaning the midlayer up ourselves.
use scsi_detach_target when a device dissapears, rather than using
config_detach and cleaning the midlayer up ourselves.

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