spi: spi-s3c64xx: Drop unused enable_datapath() function argument

The spi pointer argument is not used now so remove it.
Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: NAndi Shyti <andi@etezian.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

drivers/spi/spi-s3c64xx.c

@@ -349,7 +349,6 @@ static bool s3c64xx_spi_can_dma(struct spi_master *master,
 }
 
 static void enable_datapath(struct s3c64xx_spi_driver_data *sdd,
-				struct spi_device *spi,
 			    struct spi_transfer *xfer, int dma_mode)
 {
 	void __iomem *regs = sdd->regs;
@@ -667,7 +666,7 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master,
 	sdd->state &= ~RXBUSY;
 	sdd->state &= ~TXBUSY;
 
-	enable_datapath(sdd, spi, xfer, use_dma);
+	enable_datapath(sdd, xfer, use_dma);
 
 	/* Start the signals */
 	s3c64xx_spi_set_cs(spi, true);