[PATCH] wireless/airo: add IWENCODEEXT and IWAUTH support

This patch adds IWENCODEEXT and IWAUTH support to the airo driver for
WEP and unencrypted operation.  No WPA though.  It allows the driver to
operate more willingly with wpa_supplicant and NetworkManager.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>