Closes: #1790

Currently nut-scanner did not report a device value (should mean physical port number on a hub, where supported and not much guaranteed), so systems connected to two UPSes from same vendor could not discern between them (especially if handled by same USB bus, and lacking a serial number).

Many USB drivers use the common routine (more after #1763 was merged) which checks for device = NNN if provided.

For that matter, the common matcher also reports (and considers internally) the "bcdDevice" (version) although does not match it from user-provided configuration. FWIW this change prints that value out, commented.

Example output after the change:

:; ./tools/nut-scanner/nut-scanner -U
Scanning USB bus.
[nutdev1]
        driver = "usbhid-ups"
        port = "auto"
        vendorid = "0463"
        productid = "FFFF"
        product = "Ellipse ECO"
        serial = "000000000"
        vendor = "EATON"
        bus = "003"
        device = "002"
        ###NOTMATCHED-YET###bcdDevice = "0100"

which matches lsusb report:

:; lsusb | grep 463
Bus 003 Device 002: ID 0463:ffff MGE UPS Systems UPS