pinctrl: at91: convert to NOIRQ_SYSTEM_SLEEP_PM_OPS

With the old SET_NOIRQ_SYSTEM_SLEEP_PM_OPS, some configs result in a
build warning:

drivers/pinctrl/pinctrl-at91.c:1668:12: error: 'at91_gpio_resume' defined but not used [-Werror=unused-function]
1668 | static int at91_gpio_resume(struct device *dev)
| ^~~~~~~~~~~~~~~~
drivers/pinctrl/pinctrl-at91.c:1650:12: error: 'at91_gpio_suspend' defined but not used [-Werror=unused-function]
1650 | static int at91_gpio_suspend(struct device *dev)
| ^~~~~~~~~~~~~~~~~

Signed-off-by: Arnd Bergmann <[e-mail]>
Reviewed-by: Ryan Wanner <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/pinctrl-at91.c

···
 }
 
 static const struct dev_pm_ops at91_gpio_pm_ops = {
-	SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(at91_gpio_suspend, at91_gpio_resume)
+	NOIRQ_SYSTEM_SLEEP_PM_OPS(at91_gpio_suspend, at91_gpio_resume)
 };
 
 static struct platform_driver at91_gpio_driver = {