net: sxgbe: make local functions static

Make local functions static, because these are used only in this
file.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Byungho An <bh74.an@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c

@@ -425,7 +425,7 @@ static int init_tx_ring(struct device *dev, u8 queue_no,
  * @rx_rsize: ring size
  * Description:  this function initializes the DMA RX descriptor
  */
-void free_rx_ring(struct device *dev, struct sxgbe_rx_queue *rx_ring,
+static void free_rx_ring(struct device *dev, struct sxgbe_rx_queue *rx_ring,
 			 int rx_rsize)
 {
 	dma_free_coherent(dev, rx_rsize * sizeof(struct sxgbe_rx_norm_desc),
@@ -519,7 +519,7 @@ static int init_rx_ring(struct net_device *dev, u8 queue_no,
  * @tx_rsize: ring size
  * Description:  this function initializes the DMA TX descriptor
  */
-void free_tx_ring(struct device *dev, struct sxgbe_tx_queue *tx_ring,
+static void free_tx_ring(struct device *dev, struct sxgbe_tx_queue *tx_ring,
 			 int tx_rsize)
 {
 	dma_free_coherent(dev, tx_rsize * sizeof(struct sxgbe_tx_norm_desc),
@@ -1218,9 +1218,8 @@ static int sxgbe_release(struct net_device *dev)
 
 	return 0;
 }
-
 /* Prepare first Tx descriptor for doing TSO operation */
-void sxgbe_tso_prepare(struct sxgbe_priv_data *priv,
+static void sxgbe_tso_prepare(struct sxgbe_priv_data *priv,
 			      struct sxgbe_tx_norm_desc *first_desc,
 			      struct sk_buff *skb)
 {