ASoC: Intel: skl_hda_generic: remove rtd->codec_dai

Use macro and solve compilation issues
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200415032647.11209-1-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/skl_hda_dsp_generic.c

@@ -175,7 +175,7 @@ static void skl_set_hda_codec_autosuspend_delay(struct snd_soc_card *card)
 	struct snd_soc_pcm_runtime *rtd =
 		list_first_entry(&card->rtd_list,
 				 struct snd_soc_pcm_runtime, list);
-	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 	struct hdac_hda_priv *hda_pvt;
 
 	if (!codec_dai)