ASoC: imx-pcm-rpmsg: 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/20240808184944.267686-7-festevam@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/imx-pcm-rpmsg.c

@@ -753,7 +753,6 @@ static void imx_rpmsg_pcm_remove(struct platform_device *pdev)
 		destroy_workqueue(info->rpmsg_wq);
 }
 
-#ifdef CONFIG_PM
 static int imx_rpmsg_pcm_runtime_resume(struct device *dev)
 {
 	struct rpmsg_info *info = dev_get_drvdata(dev);
@@ -771,9 +770,7 @@ static int imx_rpmsg_pcm_runtime_suspend(struct device *dev)
 
 	return 0;
 }
-#endif
 
-#ifdef CONFIG_PM_SLEEP
 static int imx_rpmsg_pcm_suspend(struct device *dev)
 {
 	struct rpmsg_info *info = dev_get_drvdata(dev);
@@ -809,14 +806,11 @@ static int imx_rpmsg_pcm_resume(struct device *dev)
 
 	return 0;
 }
-#endif /* CONFIG_PM_SLEEP */
 
 static const struct dev_pm_ops imx_rpmsg_pcm_pm_ops = {
-	SET_RUNTIME_PM_OPS(imx_rpmsg_pcm_runtime_suspend,
-			   imx_rpmsg_pcm_runtime_resume,
-			   NULL)
-	SET_SYSTEM_SLEEP_PM_OPS(imx_rpmsg_pcm_suspend,
-				imx_rpmsg_pcm_resume)
+	RUNTIME_PM_OPS(imx_rpmsg_pcm_runtime_suspend,
+		       imx_rpmsg_pcm_runtime_resume, NULL)
+	SYSTEM_SLEEP_PM_OPS(imx_rpmsg_pcm_suspend, imx_rpmsg_pcm_resume)
 };
 
 static const struct platform_device_id imx_rpmsg_pcm_id_table[] = {
@@ -832,7 +826,7 @@ static struct platform_driver imx_pcm_rpmsg_driver = {
 	.id_table = imx_rpmsg_pcm_id_table,
 	.driver = {
 		.name = IMX_PCM_DRV_NAME,
-		.pm = &imx_rpmsg_pcm_pm_ops,
+		.pm = pm_ptr(&imx_rpmsg_pcm_pm_ops),
 	},
 };
 module_platform_driver(imx_pcm_rpmsg_driver);