ahd(4) on OpenBSD

The text c2ae8cb79d4f, as OpenBSD 4.6, OpenBSD 4.5, OpenBSD 4.4, OpenBSD 4.3, OpenBSD 4.2 shipped it.

Adaptec PCI/PCI-X AIC79xx-based Ultra320 SCSI interface

ahd(4) on OpenBSD now