ipv6: use ARRAY_SIZE for array sizing calculation on array seg6_action_table

Use the ARRAY_SIZE macro on array seg6_action_table to determine size of
the array. Improvement suggested by coccinelle.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/seg6_local.c

@@ -501,7 +501,7 @@ static struct seg6_action_desc *__get_action_desc(int action)
 	struct seg6_action_desc *desc;
 	int i, count;
 
-	count = sizeof(seg6_action_table) / sizeof(struct seg6_action_desc);
+	count = ARRAY_SIZE(seg6_action_table);
 	for (i = 0; i < count; i++) {
 		desc = &seg6_action_table[i];
 		if (desc->action == action)