Rework pccard attachment a little. Now both of my fe based ethernet

Rework pccard attachment a little.  Now both of my fe based ethernet
cards work.  These changes depend on the expanded funce parsing that
just was committed to pccard_cis.c.  In NetBSD the ethernet address
was read out of attr memory directly.  We rely on the kernel pccard
parser to pulll this information out of what appears to be an obsolete
funce with the information in it.

# I'm still getting the no rx interrupt sometimes with some hub/switches
# for reasons unknown...  But usually only one and only when dhclient
# runs.