net/fsl: fix misspelled word

Fix one misspelled word reported by codespell.
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com>
Signed-off-by: Shruti Kanetkar <Shruti@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/xgmac_mdio.c

@@ -46,7 +46,7 @@ struct tgec_mdio_controller {
 #define MDIO_DATA_BSY		(1 << 31)
 
 /*
- * Wait untill the MDIO bus is free
+ * Wait until the MDIO bus is free
  */
 static int xgmac_wait_until_free(struct device *dev,
 				 struct tgec_mdio_controller __iomem *regs)