board_helper: support HDA link

sound/soc/intel/boards/Kconfig

@@ -306,6 +306,7 @@ config SND_SOC_INTEL_SKL_HDA_DSP_GENERIC_MACH
 	tristate "Skylake+ with HDA Codecs"
 	depends on SND_HDA_CODEC_HDMI
 	select SND_SOC_INTEL_HDA_DSP_COMMON
+	select SND_SOC_INTEL_SOF_BOARD_HELPERS
 	select SND_SOC_DMIC
 	# SND_SOC_HDAC_HDA is already selected
 	help

sound/soc/intel/boards/Makefile

@@ -21,7 +21,7 @@ snd-soc-sof_cs42l42-y := sof_cs42l42.o
 snd-soc-sof_es8336-y := sof_es8336.o
 snd-soc-sof_nau8825-y := sof_nau8825.o
 snd-soc-sof_da7219-y := sof_da7219.o
-snd-soc-skl_hda_dsp-y := skl_hda_dsp_generic.o skl_hda_dsp_common.o
+snd-soc-skl_hda_dsp-y := skl_hda_dsp_generic.o
 snd-soc-ehl-rt5660-y := ehl_rt5660.o
 snd-soc-sof-ssp-amp-y := sof_ssp_amp.o
 snd-soc-sof-sdw-y += sof_sdw.o				\