[Bug 249384] Add support for Winbond CDC device in Tenma power supply

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=249384

--- Comment #7 from darius at dons.net.au ---
I checked again and it works out of the box on 12 but not 13.

When I plug it in under 13 I get the following:
usb_alloc_device: Failure selecting configuration index 0:USB_ERR_IOERROR, port
11, addr 6 (ignored)
ugen0.3: <vendor 0x0416 product 0x5011> at usbus0

If I use usbconfig to set the configuration index it works with the unmodified
umodem.ko. Note that I don't see the IO error when running usbconfig, only when
I first plug the device in.

ie I guess my patch is not needed but it indicates a regression in the USB
stack from 12 to 13.

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