batman-adv: use batadv_compare_eth for concise

It is better to use batadv_compate_eth instead of memcpy for
concise style.

Cc: Marek Lindner <mareklindner@neomailbox.ch>
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Cc: Antonio Quartulli <antonio@meshcoding.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: b.a.t.m.a.n@lists.open-mesh.org
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: NTan Xiaojun <tanxiaojun@huawei.com>
Signed-off-by: NDing Tianhong <dingtianhong@huawei.com>
Acked-by: NAntonio Quartulli <antonio@meshcoding.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/batman-adv/originator.c

@@ -41,7 +41,7 @@ int batadv_compare_orig(const struct hlist_node *node, const void *data2)
 	const void *data1 = container_of(node, struct batadv_orig_node,
 					 hash_entry);
 
-	return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
+	return batadv_compare_eth(data1, data2);
 }
 
 /**

net/batman-adv/translation-table.c

@@ -51,7 +51,7 @@ static int batadv_compare_tt(const struct hlist_node *node, const void *data2)
 	const void *data1 = container_of(node, struct batadv_tt_common_entry,
 					 hash_entry);
 
-	return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
+	return batadv_compare_eth(data1, data2);
 }
 
 /**