Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Merge r239037,239050 from head:
Support multiple interface devices. The driver had previously hardcoded
support for only the first port, but the CP2105 can have multiple ports.
Although without this change the the first port mostly worked on multi
port devices, there could still be issues with this arrangement.

Update the man page to reflect support for both ports and the CP2105.

Many thanks to Silicon Labs (www.silabs.com) for providing a CP2105-EK
dev board for testing.

Merge r238803, r238804 from head:

Add support for more devices to uslcom(4). This commit syncronises the
list of supported devices with the union of:

NetBSD src/sys/dev/usb/uslsa.c 1.18
OpenBSD src/sys/dev/usb/uslcom.c 1.24
Linux source/drivers/usb/serial/cp210x.c HEAD

Remove duplicate JABLOTRON PC60B entry.

Note that some of the devices added here are multi-port devices. The
uslcom(4) driver currently only supports the first port on such devices.

Update the man page to reflect the full list of supported devices.
Remove two caveats from the CAVEATS section, as both listed caveats no
longer apply. Add a caveat about multi-port devices.

Improve descriptions for several devices supported by uslcom(4).
Correct the spelling of the company Telegesis.
Move MpMan to the correct location alphabetically.

MFC r235317:

General mdoc(7) and typo fixes.

PR: 167776

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

- Remove superfluous ucom device lines in USB manual pages.

Submitted by: Carl @ telus.net
MFC after: 14 days
Approved by: thompsa (mentor)

mdoc changes to make this manpage consistent with our other section 4 manpages.

Oops, I accidently concatenated uslcom.[c4] multiple times before the
commit :-/ Quickly fix before things get broken...

Pointyhat to: me

Import uslcom(4) from OpenBSD - this is a driver for Silicon Laboratories
CP2101/CP2102 based USB serial adapters.

Reviewed by: imp, emaste
Obtained from: OpenBSD
MFC after: 2 weeks