the podulebus attach function.
For each podule found, config_found_sm() is now called. Device drivers
now only need to look at the podule_attach_args information during
the probe.
A new function matchpodule() has been added for use in the
podule device driver probe functions.
- split softc size and match/attach out from cfdriver into
a new struct cfattach.
- new "attach" directive for files.*. May specify the name of
the cfattach structure, so that devices may be easily attached
to parents with different autoconfiguration semantics.
mark