PCI/doc: Convert examples to generic power management

PCI-specific power management (pci_driver.suspend and pci_driver.resume) is
deprecated. Convert sample code to the generic power management framework.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bjorn Helgaas <[e-mail]>
Signed-off-by: Bjorn Helgaas <[e-mail]>

Documentation/PCI/pci-iov-howto.rst

···
 		...
 	}
 
-	static int dev_suspend(struct pci_dev *dev, pm_message_t state)
+	static int dev_suspend(struct device *dev)
 	{
 		...
 
 		return 0;
 	}
 
-	static int dev_resume(struct pci_dev *dev)
+	static int dev_resume(struct device *dev)
 	{
 		...
 
···
 		.id_table =	dev_id_table,
 		.probe =	dev_probe,
 		.remove =	dev_remove,
-		.suspend =	dev_suspend,
-		.resume =	dev_resume,
+		.driver.pm =	&dev_pm_ops,
 		.shutdown =	dev_shutdown,
 		.sriov_configure = dev_sriov_configure,
 	};