gpio: brcmstb: Use modern PM macros

Use the modern PM macros for the suspend and resume functions to be
automatically dropped by the compiler when CONFIG_PM or
CONFIG_PM_SLEEP are disabled, without having to use #ifdef guards.

This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Acked-by: Doug Berger <opendmb@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20251124002105.25429-3-jszhang@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Author: xhackerustc

drivers/gpio/gpio-brcmstb.c

@@ -533,7 +533,6 @@ static void brcmstb_gpio_shutdown(struct platform_device *pdev)
 	brcmstb_gpio_quiesce(&pdev->dev, false);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static void brcmstb_gpio_bank_restore(struct brcmstb_gpio_priv *priv,
 				      struct brcmstb_gpio_bank *bank)
 {
@@ -572,14 +571,9 @@ static int brcmstb_gpio_resume(struct device *dev)
 	return 0;
 }
 
-#else
-#define brcmstb_gpio_suspend	NULL
-#define brcmstb_gpio_resume	NULL
-#endif /* CONFIG_PM_SLEEP */
-
 static const struct dev_pm_ops brcmstb_gpio_pm_ops = {
-	.suspend_noirq	= brcmstb_gpio_suspend,
-	.resume_noirq = brcmstb_gpio_resume,
+	.suspend_noirq = pm_sleep_ptr(brcmstb_gpio_suspend),
+	.resume_noirq = pm_sleep_ptr(brcmstb_gpio_resume),
 };
 
 static int brcmstb_gpio_probe(struct platform_device *pdev)
@@ -755,7 +749,7 @@ static struct platform_driver brcmstb_gpio_driver = {
 	.driver = {
 		.name = "brcmstb-gpio",
 		.of_match_table = brcmstb_gpio_of_match,
-		.pm = &brcmstb_gpio_pm_ops,
+		.pm = pm_sleep_ptr(&brcmstb_gpio_pm_ops),
 	},
 	.probe = brcmstb_gpio_probe,
 	.remove = brcmstb_gpio_remove,