ASoC: SOF: add snd_sof_device_shutdown() helper for shutdown

Add helper snd_sof_device_shutdown() to wrap the platform specific
.shutdown callbacks for SOF platforms.
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210113152617.4048541-2-kai.vehmanen@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/core.c

@@ -385,6 +385,14 @@ int snd_sof_device_remove(struct device *dev)
 }
 EXPORT_SYMBOL(snd_sof_device_remove);
 
+int snd_sof_device_shutdown(struct device *dev)
+{
+	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
+
+	return snd_sof_shutdown(sdev);
+}
+EXPORT_SYMBOL(snd_sof_device_shutdown);
+
 MODULE_AUTHOR("Liam Girdwood");
 MODULE_DESCRIPTION("Sound Open Firmware (SOF) Core");
 MODULE_LICENSE("Dual BSD/GPL");