udl.4: Consolidate HARDWARE and add HISTORY

Some of the information needed for the HARDWARE section was the entire
DESCRIPTION section, so merge the two. While here, add the HISTORY of
this driver, add "driver" to the document description matching other
drivers, and tag the SPDX license identifier for mechanical parsing.

MFC after:	3 days

1 files changed, 15 insertions, 7 deletions

diff --git a/share/man/man4/udl.4 b/share/man/man4/udl.4
index b2cfeba2489c..c9a1a1c40045 100644
--- a/share/man/man4/udl.4
+++ b/share/man/man4/udl.4
@@ -1,3 +1,6 @@
+.\"
+.\" SPDX-License-Identifier: ISC
+.\"
 .\" $OpenBSD: udl.4,v 1.20 2012/09/18 17:11:41 jasper Exp $
 .\"
 .\" Copyright (c) 2009 Marcus Glocker <mglocker@openbsd.org>
@@ -14,12 +17,12 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd September 9, 2023
+.Dd December 23, 2025
 .Dt UDL 4
 .Os
 .Sh NAME
 .Nm udl
-.Nd DisplayLink DL-120 / DL-160 USB display devices
+.Nd DisplayLink DL-120 / DL-160 USB display device driver
 .Sh SYNOPSIS
 To compile this driver into the kernel,
 place the following lines in your
@@ -35,13 +38,11 @@ module at boot time, place the following line in
 .Bd -literal -offset indent
 udl_load="YES"
 .Ed
-.Sh DESCRIPTION
+.Sh HARDWARE
 The
 .Nm
-driver supports USB display devices based on the DisplayLink DL-120 / DL-160
-graphic chip.
-.Sh HARDWARE
-The following devices should work:
+driver supports USB display devices
+based on the DisplayLink DL-120 / DL-160 graphic chip, including:
 .Pp
 .Bl -tag -width Ds -offset indent -compact
 .It Century Corp. Japan Plus One LCD-8000U
@@ -66,3 +67,10 @@ The following devices should work:
 .El
 .Sh SEE ALSO
 .Xr usb 4
+.Sh HISTORY
+The
+.Nm
+driver appeared in
+.Ox 4.6
+and
+.Fx 11.0 .