cfg80211: add tracing for P2P Device start/stop

These were missed due to the tracing work having
started on a kernel that didn't have P2P Device
yet, implement them now.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/wireless/core.c b/net/wireless/core.c
index f280f48..ce1ad77 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -241,7 +241,7 @@
 		case NL80211_IFTYPE_P2P_DEVICE:
 			if (!wdev->p2p_started)
 				break;
-			rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
+			rdev_stop_p2p_device(rdev, wdev);
 			wdev->p2p_started = false;
 			rdev->opencount--;
 			break;
@@ -774,7 +774,7 @@
 	case NL80211_IFTYPE_P2P_DEVICE:
 		if (!wdev->p2p_started)
 			break;
-		rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
+		rdev_stop_p2p_device(rdev, wdev);
 		wdev->p2p_started = false;
 		rdev->opencount--;
 		break;