ASoC: codec: Simplify ASoC probe code.

For some CODEC drivers like who act as the MFDs children are ignored
by this patch.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/adau1373.c

@@ -1376,15 +1376,8 @@ static int adau1373_probe(struct snd_soc_codec *codec)
 	struct adau1373_platform_data *pdata = codec->dev->platform_data;
 	bool lineout_differential = false;
 	unsigned int val;
-	int ret;
 	int i;
 
-	ret = snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
-	if (ret) {
-		dev_err(codec->dev, "failed to set cache I/O: %d\n", ret);
-		return ret;
-	}
-
 	if (pdata) {
 		if (pdata->num_drc > ARRAY_SIZE(pdata->drc_setting))
 			return -EINVAL;