usb/dwc3:constify dev_pm_ops

 dev_pm_ops is not supposed to change at runtime. Marking it
 constant.
Signed-off-by: NDoug Wilson <doug.wilson@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/dwc3/dwc3-pci.c

@@ -345,7 +345,7 @@ static int dwc3_pci_resume(struct device *dev)
 }
 #endif /* CONFIG_PM_SLEEP */
 
-static struct dev_pm_ops dwc3_pci_dev_pm_ops = {
+static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
 	SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_runtime_resume,
 		NULL)