nl80211: move scan API to wdev

The new P2P Device will have to be able to scan for
P2P search, so move scanning to use struct wireless_dev
instead of struct net_device.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index 88bed02..86aeef4 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -966,11 +966,11 @@
 	return 0;
 }
 
-static int ath6kl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
+static int ath6kl_cfg80211_scan(struct wiphy *wiphy,
 				struct cfg80211_scan_request *request)
 {
-	struct ath6kl *ar = ath6kl_priv(ndev);
-	struct ath6kl_vif *vif = netdev_priv(ndev);
+	struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev);
+	struct ath6kl *ar = ath6kl_priv(vif->ndev);
 	s8 n_channels = 0;
 	u16 *channels = NULL;
 	int ret = 0;