[iwn] round two - 5100 works, but 2xxx doesn't

[Adrian Chadd]

.. I compared it to cedric's driver (after I made it compile on
-HEAD). Lo and behold, I realised a bunch of stuff in iwn_config()
wasn't being run.

Damned missing braces.

http://people.freebsd.org/~adrian/iwn/20131107-iwn-update-works-full-5100-2230-10.diff

This works on the 5100 and the Centrino 2230 NICs. I haven't yet
tested the rest.



-adrian