devclass_get_device(9) on FreeBSD

The text 88e86550ad8d, as FreeBSD 4.3-RELEASE, FreeBSD 4.2-RELEASE, FreeBSD 4.1.1-RELEASE, FreeBSD 4.1-RELEASE, FreeBSD 4.0-RELEASE shipped it.

translate unit number to device

devclass_get_device(9) on FreeBSD now