clocksource/drivers/ingenic-timer: Use pm_sleep_ptr() macro

The use of the pm_sleep_ptr() macro allows the compiler to always see
the dev_pm_ops structure and related functions, while still allowing the
unused code to be removed, without the need for the __maybe_unused
markings.

Signed-off-by: Paul Cercueil <[e-mail]>
Signed-off-by: Daniel Lezcano <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/clocksource/ingenic-timer.c

···
 	return 0;
 }
 
-static int __maybe_unused ingenic_tcu_suspend(struct device *dev)
+static int ingenic_tcu_suspend(struct device *dev)
 {
 	struct ingenic_tcu *tcu = dev_get_drvdata(dev);
 	unsigned int cpu;
···
 	return 0;
 }
 
-static int __maybe_unused ingenic_tcu_resume(struct device *dev)
+static int ingenic_tcu_resume(struct device *dev)
 {
 	struct ingenic_tcu *tcu = dev_get_drvdata(dev);
 	unsigned int cpu;
···
 	return ret;
 }
 
-static const struct dev_pm_ops __maybe_unused ingenic_tcu_pm_ops = {
+static const struct dev_pm_ops ingenic_tcu_pm_ops = {
 	/* _noirq: We want the TCU clocks to be gated last / ungated first */
 	.suspend_noirq = ingenic_tcu_suspend,
 	.resume_noirq  = ingenic_tcu_resume,
···
 static struct platform_driver ingenic_tcu_driver = {
 	.driver = {
 		.name	= "ingenic-tcu-timer",
-#ifdef CONFIG_PM_SLEEP
-		.pm	= &ingenic_tcu_pm_ops,
-#endif
+		.pm	= pm_sleep_ptr(&ingenic_tcu_pm_ops),
 		.of_match_table = ingenic_tcu_of_match,
 	},
 };