ASoC: Intel: Skylake: Report Platform ID info from NHLT

This patch create entry in sysfs file system to report the
platform_id = "pci-id-oem_id-oem_table_id-oem_revision"
for board identification.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Sodhi, VunnyX <vunnyx.sodhi@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl.h

@@ -130,5 +130,7 @@ int skl_resume_dsp(struct skl *skl);
 void skl_cleanup_resources(struct skl *skl);
 const struct skl_dsp_ops *skl_get_dsp_ops(int pci_id);
 void skl_update_d0i3c(struct device *dev, bool enable);
+int skl_nhlt_create_sysfs(struct skl *skl);
+void skl_nhlt_remove_sysfs(struct skl *skl);
 
 #endif /* __SOUND_SOC_SKL_H */