Looking at the Linux driver, they appear to expect to get a variety of
"info" packets from this card.  It looks like the only case we expect
is to get the INFO_COUNTERS bundle.

I *think* I've successfully put in a test for other info types, and I'm
not getting any... but *boy* would it make sense for the card to be giving
us an "async info packet", examples of which are "Link status"
(WI_INFO_LINK_STAT), whenever the only other functional card in range
goes down.

And yet, we don't seem to be getting that interrupt, even when we sort of
expect it.

I really wish I had docs.  :)

-s