ASoC: Intel: skl-hda-dsp-generic: add dmic dapm widget and route

Adding DAPM MIC endpoint widget "SoC DMIC" and route, to enable
DMIC DAPM support with hda generic machine.
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190809232236.21182-5-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/skl_hda_dsp_generic.c

@@ -23,6 +23,7 @@ static const struct snd_soc_dapm_widget skl_hda_widgets[] = {
 	SND_SOC_DAPM_MIC("Alt Analog In", NULL),
 	SND_SOC_DAPM_SPK("Digital Out", NULL),
 	SND_SOC_DAPM_MIC("Digital In", NULL),
+	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
 };
 
 static const struct snd_soc_dapm_route skl_hda_map[] = {
@@ -41,6 +42,9 @@ static const struct snd_soc_dapm_route skl_hda_map[] = {
 	{ "Codec Input Pin2", NULL, "Digital In" },
 	{ "Codec Input Pin3", NULL, "Alt Analog In" },
 
+	/* digital mics */
+	{"DMic", NULL, "SoC DMIC"},
+
 	/* CODEC BE connections */
 	{ "Analog Codec Playback", NULL, "Analog CPU Playback" },
 	{ "Analog CPU Playback", NULL, "codec0_out" },