rsu(4) on OpenBSD

The text 830752cd1bea, as OpenBSD 7.6, OpenBSD 7.5, OpenBSD 7.4, OpenBSD 7.3, OpenBSD 7.2, OpenBSD 7.1 shipped it.

Realtek RTL8188SU/RTL8192SU USB IEEE 802.11b/g/n wireless network device