ASoC: davinci-mcasp: don't configure AFSX direction in DIT mode

AFSX won't be used in DIT mode. The related pins are AHCLKX and
the data pins.
Signed-off-by: NYegor Yefremov <yegorslists@googlemail.com>
Acked-by: NVaibhav Bedia <vaibhav.bedia@ti.com>
Tested-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/davinci/davinci-mcasp.c

@@ -795,9 +795,6 @@ static void davinci_hw_param(struct davinci_audio_dev *dev, int stream)
 /* S/PDIF */
 static void davinci_hw_dit_param(struct davinci_audio_dev *dev)
 {
-	/* Set the PDIR for Serialiser as output */
-	mcasp_set_bits(dev->base + DAVINCI_MCASP_PDIR_REG, AFSX);
-
 	/* TXMASK for 24 bits */
 	mcasp_set_reg(dev->base + DAVINCI_MCASP_TXMASK_REG, 0x00FFFFFF);