bnx(4) on OpenBSD

The text 0ac80a29c2d9, as OpenBSD 5.3, OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0, OpenBSD 4.9, OpenBSD 4.8, OpenBSD 4.7 shipped it.

Broadcom NetXtreme II 10/100/Gigabit Ethernet device