o Crank MAX_START back up to 256 and allow it to be overridden.  This time we   leave SCSI_NCR_DFLT_TAGS alone since turning off tags caused some problems. o Use new pci routines in attach (from NetBSD).  This also repairs   -DNCR_IOMAPPED.
o Crank MAX_START back up to 256 and allow it to be overridden.  This time we
  leave SCSI_NCR_DFLT_TAGS alone since turning off tags caused some problems.
o Use new pci routines in attach (from NetBSD).  This also repairs
  -DNCR_IOMAPPED.

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