ASoC: Intel: use standard interface for Hdaudio machine driver

Don't rely on internal Skylake-specific data structures, use
generic interface to let other drivers use the same machine driver
as is, e.g. SOF to support HDaudio codecs and HDMI outputs.

Tested on LeafHill CRB board, no regression seen with this change.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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

@@ -525,7 +525,6 @@ static int skl_machine_device_register(struct skl *skl)
 {
 	struct snd_soc_acpi_mach *mach = skl->mach;
 	struct hdac_bus *bus = skl_to_bus(skl);
-	struct skl_machine_pdata *pdata;
 	struct platform_device *pdev;
 	int ret;
 
@@ -542,12 +541,9 @@ static int skl_machine_device_register(struct skl *skl)
 		return -EIO;
 	}
 
-	if (mach->pdata) {
-		pdata = (struct skl_machine_pdata *)mach->pdata;
-		pdata->platform = dev_name(bus->dev);
-		pdata->codec_mask = bus->codec_mask;
-		dev_set_drvdata(&pdev->dev, mach->pdata);
-	}
+	mach->mach_params.platform = dev_name(bus->dev);
+	mach->mach_params.codec_mask = bus->codec_mask;
+	dev_set_drvdata(&pdev->dev, mach);
 
 	skl->i2s_dev = pdev;