I think a change of HBA SCSI ID would have to be a compile-time
constant, to avoid the host coming on the bus at the same ID as
some other host at HBA initialization time.

If we can guarantee that NetBSD's HBA SCSI drivers won't touch
their attached bus until some part of the system has had the chance
to change the host ID, then it would be OK to do it later. However,
we probe the busses at boot time...

	Erik <fair@netbsd.org>