drivers might assume sta.drv_priv is clear while
the sta is added, so clear it on reconfinguration.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Acked-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>