Kyle Evans 04391da364 libusb: improve compatibility
Specifically, add LIBUSB_CLASS_PHYSICAL and the libusb_has_capability API.
Descriptions and functionality for these derived from the
documentation at [0].  The current set of capabilities are all supported by
libusb.

These were detected as missing after updating net/freerdp to 2.1.1, which
attempted to use both.

[0] http://libusb.sourceforge.net/api-1.0/group__libusb__misc.html

Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D25194
2020-06-09 17:17:43 +00:00
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