patch to add additional devices to uftdi(4)

[Mike Durian]

I couldn't find a maintainer for uftdi(4), so I sent the patch in
as a PR.  It is available here:

http://www.freebsd.org/cgi/query-pr.cgi?pr=67357

It adds support for the Intrepid Control Systems USB based vehicle
bus interfaces.

Earlier, I submited a PR that contains a patch that should be
ignored (a subset of the later patch), but also a bug that results
in a system panic.  A USB and/or uftdi person might want to take
a look at it:

http://www.freebsd.org/cgi/query-pr.cgi?pr=67301

mike