Passing the ctrl iface to wpa_supplicant will automatically cause wpa_supplicant
to send "STOP_AP" messages to the hostapd. This breaks the AP interfaces.
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
(cherry picked from commit 0da54fa6428ea98d31b49f5d9a4a272214f5d188)