ASoC: fsl_audmix: Switch to RUNTIME/SYSTEM_SLEEP_PM_OPS()

Replace SET_RUNTIME_PM_OPS()/SET SYSTEM_SLEEP_PM_OPS() with their modern
RUNTIME_PM_OPS() and SYSTEM_SLEEP_PM_OPS() alternatives.

The combined usage of pm_ptr() and RUNTIME_PM_OPS/SYSTEM_SLEEP_PM_OPS()
allows the compiler to evaluate if the runtime suspend/resume() functions
are used at build time or are simply dead code.

This allows removing the CONFIG_PM ifdefery from the runtime
suspend/resume() functions.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Link: https://patch.msgid.link/20240808184944.267686-1-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/fsl_audmix.c

@@ -512,7 +512,6 @@ static void fsl_audmix_remove(struct platform_device *pdev)
 		platform_device_unregister(priv->pdev);
 }
 
-#ifdef CONFIG_PM
 static int fsl_audmix_runtime_resume(struct device *dev)
 {
 	struct fsl_audmix *priv = dev_get_drvdata(dev);
@@ -540,14 +539,11 @@ static int fsl_audmix_runtime_suspend(struct device *dev)
 
 	return 0;
 }
-#endif /* CONFIG_PM */
 
 static const struct dev_pm_ops fsl_audmix_pm = {
-	SET_RUNTIME_PM_OPS(fsl_audmix_runtime_suspend,
-			   fsl_audmix_runtime_resume,
-			   NULL)
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
+	RUNTIME_PM_OPS(fsl_audmix_runtime_suspend, fsl_audmix_runtime_resume,
+		       NULL)
+	SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
 };
 
 static struct platform_driver fsl_audmix_driver = {
@@ -556,7 +552,7 @@ static struct platform_driver fsl_audmix_driver = {
 	.driver = {
 		.name = "fsl-audmix",
 		.of_match_table = fsl_audmix_ids,
-		.pm = &fsl_audmix_pm,
+		.pm = pm_ptr(&fsl_audmix_pm),
 	},
 };
 module_platform_driver(fsl_audmix_driver);