ASoC: SOF: sof-pci-dev: add .shutdown() callback

Add the .shutdown() callback to the sof-pci-dev driver, to help to
handle shutting down specific tasks for SOF PCI 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/20210113152617.4048541-3-kai.vehmanen@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/sof-pci-dev.c

@@ -450,6 +450,11 @@ static void sof_pci_remove(struct pci_dev *pci)
 	pci_release_regions(pci);
 }
 
+static void sof_pci_shutdown(struct pci_dev *pci)
+{
+	snd_sof_device_shutdown(&pci->dev);
+}
+
 /* PCI IDs */
 static const struct pci_device_id sof_pci_ids[] = {
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_MERRIFIELD)
@@ -523,6 +528,7 @@ static struct pci_driver snd_sof_pci_driver = {
 	.id_table = sof_pci_ids,
 	.probe = sof_pci_probe,
 	.remove = sof_pci_remove,
+	.shutdown = sof_pci_shutdown,
 	.driver = {
 		.pm = &sof_pci_pm,
 	},