From scottr@netbsd.org:

From scottr@netbsd.org:
Several more changes to move us toward MI-ness:

 - Use more consistent and portable types in the softc.
 - Map registers using an array of bus_size_t offsets, and set up the
   mapping in the attach code (thanks to Jason Thorpe for suggesting
   this!).
 - Disable the ae-specific watchdog, which is no longer necessary in
   the general case.

Still remaining:  split out functions used to copy data to/from the
card, and retain a way to have a local driver name with the MI code.