Staging: rt2860: enable WPA_SUPPLICANT support
This is needed in order to get NetworkManager to work properly
with this driver.
More details can be found at
https://bugzilla.novell.com/show_bug.cgi?id=437959
Cc: Helmut Schaa <hschaa@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>