ASoC: Intel: bytcr_rt5640: Get platform data via dev_get_platdata()

Access to platform data via dev_get_platdata() getter to make code cleaner.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20211007165715.27463-2-andriy.shevchenko@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/bytcr_rt5640.c

@@ -1495,12 +1495,12 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	static const char * const map_name[] = { "dmic1", "dmic2", "in1", "in3", "none" };
+	struct snd_soc_acpi_mach *mach = dev_get_platdata(dev);
 	__maybe_unused const char *spk_type;
 	const struct dmi_system_id *dmi_id;
 	const char *headset2_string = "";
 	const char *lineout_string = "";
 	struct byt_rt5640_private *priv;
-	struct snd_soc_acpi_mach *mach;
 	const char *platform_name;
 	struct acpi_device *adev;
 	struct device *codec_dev;
@@ -1517,7 +1517,6 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
 
 	/* register the soc card */
 	byt_rt5640_card.dev = &pdev->dev;
-	mach = byt_rt5640_card.dev->platform_data;
 	snd_soc_card_set_drvdata(&byt_rt5640_card, priv);
 
 	/* fix index of codec dai */