batman-adv: checkpatch - Please use a blank line after declarations

Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index 34e096d..facd1fe 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -198,6 +198,7 @@
 	uint8_t type;		/* bla_claimframe */
 	__be16 group;		/* group id */
 };
+
 #pragma pack()
 
 /**