[Bug 264634] uchcom(4) does not detect CH340K

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264634

            Bug ID: 264634
           Summary: uchcom(4) does not detect CH340K
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: usb
          Assignee: usb@FreeBSD.org
          Reporter: trombik1973@gmail.com

Created attachment 234641
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=234641&action=edit
a patch to detect CH340K

uchcom(4) does not detect CH340K, which is often used in cheap ESP32
development boards. Bug #260783 added the USB ID, but does not attach the
device on my CURRENT (dc484aed0a014de0fdf33d972c36413da6903a2e, May 9). the
patch fixes it.

ugen0.7: <vendor 0x1a86 USB Serial> at usbus0
uchcom0 on uhub1
uchcom0: <vendor 0x1a86 USB Serial, rev 1.10/2.64, addr 6> on usbus0
uchcom0: CH341 detected

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