ASoC: Intel: Skylake: cleanup before moving ACPI tables

There is no need to deal with DMICs if the DSP is not present and
there is no ACPI machine ID found.

Simplify before moving these ACPI tables to sound/soc/intel/common

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl.c

@@ -500,10 +500,12 @@ static int skl_find_machine(struct skl *skl, void *driver_data)
 
  skl->mach = mach;
  skl->fw_name = mach->fw_filename;
- pdata = skl->mach->pdata;
+ pdata = mach->pdata;
 
- if (mach->pdata)
+ if (pdata) {
  skl->use_tplg_pcm = pdata->use_tplg_pcm;
+ pdata->dmic_num = skl_get_dmic_geo(skl);
+ }
 
  return 0;
 }
@@ -930,8 +932,6 @@ static int skl_probe(struct pci_dev *pci,
 
  pci_set_drvdata(skl->pci, ebus);
 
- skl_dmic_data.dmic_num = skl_get_dmic_geo(skl);
-
  /* check if dsp is there */
  if (bus->ppcap) {
  /* create device for dsp clk */