net/802: add __rcu annotations

(struct net_device)->garp_port is rcu protected :
(struct garp_port)->applicants is rcu protected :

add __rcu annotation and proper rcu primitives.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/garp.h b/include/net/garp.h
index 825f172..f4c2959 100644
--- a/include/net/garp.h
+++ b/include/net/garp.h
@@ -107,7 +107,7 @@
 };
 
 struct garp_port {
-	struct garp_applicant	*applicants[GARP_APPLICATION_MAX + 1];
+	struct garp_applicant __rcu	*applicants[GARP_APPLICATION_MAX + 1];
 };
 
 extern int	garp_register_application(struct garp_application *app);