ASoC: rockchip: Add dapm route for HDMI

Add dapm route for DP codec.
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/rockchip/rk3399_gru_sound.c

@@ -47,6 +47,7 @@ static const struct snd_soc_dapm_widget rockchip_dapm_widgets[] = {
 	SND_SOC_DAPM_SPK("Speakers", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 	SND_SOC_DAPM_MIC("Int Mic", NULL),
+	SND_SOC_DAPM_LINE("HDMI", NULL),
 };
 
 static const struct snd_soc_dapm_route rockchip_dapm_routes[] = {
@@ -60,6 +61,7 @@ static const struct snd_soc_dapm_route rockchip_dapm_routes[] = {
 	{"Headphones", NULL, "HPL"},
 	{"Headphones", NULL, "HPR"},
 	{"Speakers", NULL, "Speaker"},
+	{"HDMI", NULL, "TX"},
 };
 
 static const struct snd_kcontrol_new rockchip_controls[] = {
@@ -67,6 +69,7 @@ static const struct snd_kcontrol_new rockchip_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Speakers"),
 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
 	SOC_DAPM_PIN_SWITCH("Int Mic"),
+	SOC_DAPM_PIN_SWITCH("HDMI"),
 };
 
 static int rockchip_sound_max98357a_hw_params(struct snd_pcm_substream *substream,