ASoC: tlv320aic31xx: Remove snd_soc_codec_set_cache_io() call

Remove snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP) call
and codec->control_data = aic31xx->regmap assignment since that
already done by core.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/tlv320aic31xx.c

@@ -1049,18 +1049,9 @@ static int aic31xx_codec_probe(struct snd_soc_codec *codec)
 	dev_dbg(aic31xx->dev, "## %s\n", __func__);
 
 	aic31xx = snd_soc_codec_get_drvdata(codec);
-	codec->control_data = aic31xx->regmap;
 
 	aic31xx->codec = codec;
 
-	ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP);
-
-	if (ret != 0) {
-		dev_err(codec->dev, "snd_soc_codec_set_cache_io failed %d\n",
-			ret);
-		return ret;
-	}
-
 	for (i = 0; i < ARRAY_SIZE(aic31xx->supplies); i++) {
 		aic31xx->disable_nb[i].nb.notifier_call =
 			aic31xx_regulator_event;