Edward Tomasz Napierala 912280b4b4 Make it possible to pass the ugenX.Y to usbconfig(8) without using "-d",
eg "usbconfig ugen1.2 dump_all_desc".

Reviewed by:	hselasky@
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2018-04-17 19:39:47 +00:00
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