nl80211: Do not stop AP mode Probe Request reporting on Listen stop

nl80211: Do not stop AP mode Probe Request reporting on Listen stop

When nl80211_setup_ap() has enabled Probe Request reporting, this must
not be disabled when P2P Listen state is stopped to avoid breaking AP
mode operations. This could happen, e.g., if a Probe Request frame was
received from a P2P device that the we are trying to invite to our group
(i.e., when operating in GO role). p2p_probe_req_rx() calls
p2p_invite_start() in this case and that ends up calling
p2p->cfg->stop_listen() which calls probe_req_report() driver op.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>