ASoC: Intel: sof_sdw_rt700: remove codec_dai use

Use macro
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200409185827.16255-13-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/sof_sdw_rt700.c

@@ -47,7 +47,8 @@ static int rt700_rtd_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_card *card = rtd->card;
 	struct mc_private *ctx = snd_soc_card_get_drvdata(card);
-	struct snd_soc_component *component = rtd->codec_dai->component;
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	struct snd_soc_component *component = codec_dai->component;
 	struct snd_soc_jack *jack;
 	int ret;