gdt(4) on OpenBSD

The text 24a287458564, as OpenBSD 4.9, OpenBSD 4.8, OpenBSD 4.7, OpenBSD 4.6, OpenBSD 4.5, OpenBSD 4.4, OpenBSD 4.3, OpenBSD 4.2 shipped it.

ICP-Vortex and Intel GDT SATA/SCSI RAID controller