ASoC: hdac_hda: Update hdac hda dai table to include intel-hdmi-hifi4

TGL supports more than three HDMI Dai's. So, update hdac_hda_dais table
to include 4th DAI.

Without this patch, we saw the below error in TGL DUT:
 sof_rt5682 tgl_max98357a_rt5682: ASoC: CODEC DAI intel-hdmi-hifi4 not
Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Signed-off-by: Jairaj Arava <jairaj.arava@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191220171037.10689-3-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/hdac_hda.c

@@ -164,6 +164,19 @@ static struct snd_soc_dai_driver hdac_hda_dais[] = {
 		.sig_bits = 24,
 	},
 },
+{
+	.id = HDAC_HDMI_3_DAI_ID,
+	.name = "intel-hdmi-hifi4",
+	.ops = &hdac_hda_dai_ops,
+	.playback = {
+		.stream_name    = "hifi4",
+		.channels_min   = 1,
+		.channels_max   = 32,
+		.rates          = STUB_HDMI_RATES,
+		.formats        = STUB_FORMATS,
+		.sig_bits = 24,
+	},
+},
 
 };
 
@@ -346,6 +359,9 @@ static struct hda_pcm *snd_soc_find_pcm_from_dai(struct hdac_hda_priv *hda_pvt,
 	case HDAC_HDMI_2_DAI_ID:
 		pcm_name = "HDMI 2";
 		break;
+	case HDAC_HDMI_3_DAI_ID:
+		pcm_name = "HDMI 3";
+		break;
 	default:
 		dev_err(&hcodec->core.dev, "invalid dai id %d\n", dai->id);
 		return NULL;

sound/soc/codecs/hdac_hda.h

@@ -13,7 +13,8 @@ enum {
 	HDAC_HDMI_0_DAI_ID,
 	HDAC_HDMI_1_DAI_ID,
 	HDAC_HDMI_2_DAI_ID,
-	HDAC_LAST_DAI_ID = HDAC_HDMI_2_DAI_ID,
+	HDAC_HDMI_3_DAI_ID,
+	HDAC_LAST_DAI_ID = HDAC_HDMI_3_DAI_ID,
 };
 
 struct hdac_hda_pcm {