ASoC: Intel: Add makefile support for SKL driver

This adds makefile and Kconfig to enable Skylake HD audio PCM driver
Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/Kconfig

@@ -134,3 +134,7 @@ config SND_SOC_INTEL_CHT_BSW_MAX98090_TI_MACH
       This adds support for ASoC machine driver for Intel(R) Cherrytrail & Braswell
       platforms with MAX98090 audio codec it also can support TI jack chip as aux device.
       If unsure select "N".
+
+config SND_SOC_INTEL_SKYLAKE
+	tristate
+	select SND_HDA_EXT_CORE

sound/soc/intel/Makefile

@@ -5,6 +5,7 @@ obj-$(CONFIG_SND_SOC_INTEL_SST) += common/
 obj-$(CONFIG_SND_SOC_INTEL_HASWELL) += haswell/
 obj-$(CONFIG_SND_SOC_INTEL_BAYTRAIL) += baytrail/
 obj-$(CONFIG_SND_SST_MFLD_PLATFORM) += atom/
+obj-$(CONFIG_SND_SOC_INTEL_SKYLAKE) += skylake/
 
 # Machine support
 obj-$(CONFIG_SND_SOC) += boards/

sound/soc/intel/skylake/Makefile

+snd-soc-skl-objs := skl.o skl-pcm.o
+
+obj-$(CONFIG_SND_SOC_INTEL_SKYLAKE) += snd-soc-skl.o