ASoC: Intel: skl-hda-dsp-generic: add dependency to dmic driver

The hda generic machine actually has dependency on the dmic driver,
select SND_SOC_DMIC at the machine selected to fix it.
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/20190809232236.21182-4-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/Kconfig

@@ -387,6 +387,7 @@ if SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC || SND_SOC_SOF_HDA_AUDIO_CODEC
 config SND_SOC_INTEL_SKL_HDA_DSP_GENERIC_MACH
 	tristate "SKL/KBL/BXT/APL with HDA Codecs"
 	select SND_SOC_HDAC_HDMI
+	select SND_SOC_DMIC
 	# SND_SOC_HDAC_HDA is already selected
 	help
 	  This adds support for ASoC machine driver for Intel platforms