r8169: use macro pm_ptr

Use macro pm_ptr(), this helps to avoid some ifdeffery.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/realtek/r8169_main.c

@@ -5414,9 +5414,7 @@ static struct pci_driver rtl8169_pci_driver = {
 	.probe		= rtl_init_one,
 	.remove		= rtl_remove_one,
 	.shutdown	= rtl_shutdown,
-#ifdef CONFIG_PM
-	.driver.pm	= &rtl8169_pm_ops,
-#endif
+	.driver.pm	= pm_ptr(&rtl8169_pm_ops),
 };
 
 module_pci_driver(rtl8169_pci_driver);