both 16bit id values found in card CIS and special value to indicate
that no value found in CIS. Use that special value for the card that
doesn't have id values. Test that value in ne2000_match().
> revision 1.1.2.6
> date: 1997/10/18 10:50:21; author: enami; state: Exp; lines: +2 -2
> In the macro ne2000_match(), use its argument `fct' instead of
> using pa->pf->number directly.
thorpej