ASoC: rt5670: fix wrong audio route

When we select "IF1_ADC4" for IF1 ADC Muxes, it is actually connected
to "TxDP_ADC" widget. This patch fixes the audio route and remove the
unexisting "IF1_ADC4" widget.
Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5670.c

@@ -1717,7 +1717,6 @@ static const struct snd_soc_dapm_widget rt5670_dapm_widgets[] = {
 	SND_SOC_DAPM_PGA("IF1_ADC1", SND_SOC_NOPM, 0, 0, NULL, 0),
 	SND_SOC_DAPM_PGA("IF1_ADC2", SND_SOC_NOPM, 0, 0, NULL, 0),
 	SND_SOC_DAPM_PGA("IF1_ADC3", SND_SOC_NOPM, 0, 0, NULL, 0),
-	SND_SOC_DAPM_PGA("IF1_ADC4", SND_SOC_NOPM, 0, 0, NULL, 0),
 
 	/* DSP */
 	SND_SOC_DAPM_PGA("TxDP_ADC", SND_SOC_NOPM, 0, 0, NULL, 0),
@@ -2086,13 +2085,13 @@ static const struct snd_soc_dapm_route rt5670_dapm_routes[] = {
 	{ "IF1 ADC1 IN1 Mux", "IF1_ADC3", "IF1_ADC3" },
 
 	{ "IF1 ADC1 IN2 Mux", "IF1_ADC1_IN1", "IF1 ADC1 IN1 Mux" },
-	{ "IF1 ADC1 IN2 Mux", "IF1_ADC4", "IF1_ADC4" },
+	{ "IF1 ADC1 IN2 Mux", "IF1_ADC4", "TxDP_ADC" },
 
 	{ "IF1 ADC2 IN Mux", "IF_ADC2", "IF_ADC2" },
 	{ "IF1 ADC2 IN Mux", "VAD_ADC", "VAD_ADC" },
 
 	{ "IF1 ADC2 IN1 Mux", "IF1_ADC2_IN", "IF1 ADC2 IN Mux" },
-	{ "IF1 ADC2 IN1 Mux", "IF1_ADC4", "IF1_ADC4" },
+	{ "IF1 ADC2 IN1 Mux", "IF1_ADC4", "TxDP_ADC" },
 
 	{ "IF1_ADC1" , NULL, "IF1 ADC1 IN2 Mux" },
 	{ "IF1_ADC2" , NULL, "IF1 ADC2 IN1 Mux" },