ASoC: wm8994: fix add dynamic path error

If there don't exist dynamic sink or source widget, it will failed to
add dynamic path.

"AIF3ADCDAT" is snd_soc_dapm_aif_out, can't be dynamic sink widget. So
change the audio route to fix this issue.
Signed-off-by: Zidan Wang <zidan.wang@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm8994.c

@@ -1942,14 +1942,16 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{ "AIF2ADCDAT", NULL, "AIF2ADC Mux" },
 
 	/* AIF3 output */
-	{ "AIF3ADCDAT", "AIF1ADCDAT", "AIF1ADC1L" },
-	{ "AIF3ADCDAT", "AIF1ADCDAT", "AIF1ADC1R" },
-	{ "AIF3ADCDAT", "AIF1ADCDAT", "AIF1ADC2L" },
-	{ "AIF3ADCDAT", "AIF1ADCDAT", "AIF1ADC2R" },
-	{ "AIF3ADCDAT", "AIF2ADCDAT", "AIF2ADCL" },
-	{ "AIF3ADCDAT", "AIF2ADCDAT", "AIF2ADCR" },
-	{ "AIF3ADCDAT", "AIF2DACDAT", "AIF2DACL" },
-	{ "AIF3ADCDAT", "AIF2DACDAT", "AIF2DACR" },
+	{ "AIF3ADC Mux", "AIF1ADCDAT", "AIF1ADC1L" },
+	{ "AIF3ADC Mux", "AIF1ADCDAT", "AIF1ADC1R" },
+	{ "AIF3ADC Mux", "AIF1ADCDAT", "AIF1ADC2L" },
+	{ "AIF3ADC Mux", "AIF1ADCDAT", "AIF1ADC2R" },
+	{ "AIF3ADC Mux", "AIF2ADCDAT", "AIF2ADCL" },
+	{ "AIF3ADC Mux", "AIF2ADCDAT", "AIF2ADCR" },
+	{ "AIF3ADC Mux", "AIF2DACDAT", "AIF2DACL" },
+	{ "AIF3ADC Mux", "AIF2DACDAT", "AIF2DACR" },
+
+	{ "AIF3ADCDAT", NULL, "AIF3ADC Mux" },
 
 	/* Loopback */
 	{ "AIF1 Loopback", "ADCDAT", "AIF1ADCDAT" },