Rocket Port update patch

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.