Start the retirement process for ufm

This driver hasn't been relevant in almost 15 years. It was for a product on the
shelves for about 6 months in 2003/2004. I've not updated the driver since then,
and have had nobody talk to me about it since maybe 2006 or 2007. It doesn't
implement a standard interface, and can be better done with libusb. All the
action has moved to webcamd for newer, more fully featured hardware. It makes no
appearances in the nycbug dmesg archive.

Relnotes: yes
MFC After: 3 days

share/man/man4/ufm.4

@@ -43,6 +43,12 @@ module at boot time, place the following line in
 .Bd -literal -offset indent
 ufm_load="YES"
 .Ed
+.Sh DEPRECATION NOTICE
+The
+.Nm
+driver is not present in
+.Fx 13.0
+and later.
 .Sh DESCRIPTION
 The
 .Nm

sys/dev/usb/misc/ufm.c

@@ -164,6 +164,7 @@ ufm_attach(device_t dev)
 	if (error) {
 		goto detach;
 	}
+	gone_in_dev(dev, 13, "Driver no longer relevant");
 	return (0);			/* success */
 
 detach: