Add another ISA type for these cards, and switch to that type from the
APNE probe code in response to a module parameter. 

I've addressed review comments received so far, to the best of my ability.
Patch 1 not changed in v3, only fixes to patch 2 by Alex Kazik included.

v3 is the first version of this patch series sent to net-next (apne.c part
only).

Tested by Alex on his Amiga 1200.

Cheers,

   Michael