Rocket Port update patch

[Doug Ambrisko]

I've brought in the changes to the driver from the Comtrol web site.
This greatly improves the RocketPort HW support for those devices.
The changes are at:
	http://www.ambrisko.com/doug/rp_current.patch

I'd like to commit it so things just work out of the box.  I tried to
maintain all the various FreeBSD & Comtrol changes.

It works here on my previously unsupported card.

Thanks,

Doug A.