net: dsa: make function ksz_rcv static

function ksz_rcv can be made static as it does not need to be
in global scope. Reformat arguments to make it checkpatch warning
free too.

Cleans up sparse warning: "symbol 'ksz_rcv' was not declared. Should
it be static?"
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Woojung Huh <Woojung.Huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/dsa/tag_ksz.c

@@ -72,8 +72,9 @@ static struct sk_buff *ksz_xmit(struct sk_buff *skb, struct net_device *dev)
 	return nskb;
 }
 
-struct sk_buff *ksz_rcv(struct sk_buff *skb, struct net_device *dev,
-			struct packet_type *pt, struct net_device *orig_dev)
+static struct sk_buff *ksz_rcv(struct sk_buff *skb, struct net_device *dev,
+			       struct packet_type *pt,
+			       struct net_device *orig_dev)
 {
 	struct dsa_switch_tree *dst = dev->dsa_ptr;
 	struct dsa_switch *ds;