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/nl80211.c b/net/wireless/nl80211.c
index 5d3167d..8c08578 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -6932,7 +6932,7 @@
 	if (err)
 		return err;
 
-	err = rdev->ops->start_p2p_device(&rdev->wiphy, wdev);
+	err = rdev_start_p2p_device(rdev, wdev);
 	if (err)
 		return err;
 
@@ -6958,7 +6958,7 @@
 	if (!wdev->p2p_started)
 		return 0;
 
-	rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
+	rdev_stop_p2p_device(rdev, wdev);
 	wdev->p2p_started = false;
 
 	mutex_lock(&rdev->devlist_mtx);