spi/spi_s3c64xx: Staticise non-exported functions

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

drivers/spi/spi_s3c64xx.c

@@ -447,7 +447,7 @@ static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd)
 	writel(val, regs + S3C64XX_SPI_CLK_CFG);
 }
 
-void s3c64xx_spi_dma_rxcb(struct s3c2410_dma_chan *chan, void *buf_id,
+static void s3c64xx_spi_dma_rxcb(struct s3c2410_dma_chan *chan, void *buf_id,
 				 int size, enum s3c2410_dma_buffresult res)
 {
 	struct s3c64xx_spi_driver_data *sdd = buf_id;
@@ -467,7 +467,7 @@ void s3c64xx_spi_dma_rxcb(struct s3c2410_dma_chan *chan, void *buf_id,
 	spin_unlock_irqrestore(&sdd->lock, flags);
 }
 
-void s3c64xx_spi_dma_txcb(struct s3c2410_dma_chan *chan, void *buf_id,
+static void s3c64xx_spi_dma_txcb(struct s3c2410_dma_chan *chan, void *buf_id,
 				 int size, enum s3c2410_dma_buffresult res)
 {
 	struct s3c64xx_spi_driver_data *sdd = buf_id;