thermal: hisi_termal: Switch from CONFIG_PM_SLEEP guards to pm_sleep_ptr()

Cleaning up the driver to use pm_sleep_ptr() macro instead of #ifdef
guards is simpler and allows the compiler to remove those functions
if built without CONFIG_PM_SLEEP support.

Signed-off-by: Hesham Almatary <hesham.almatary@huawei.com>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: hesham-huawei

drivers/thermal/hisi_thermal.c

@@ -629,7 +629,6 @@ static int hisi_thermal_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int hisi_thermal_suspend(struct device *dev)
 {
 	struct hisi_thermal_data *data = dev_get_drvdata(dev);
@@ -651,15 +650,14 @@ static int hisi_thermal_resume(struct device *dev)
 
 	return ret;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(hisi_thermal_pm_ops,
+static DEFINE_SIMPLE_DEV_PM_OPS(hisi_thermal_pm_ops,
 			 hisi_thermal_suspend, hisi_thermal_resume);
 
 static struct platform_driver hisi_thermal_driver = {
 	.driver = {
 		.name		= "hisi_thermal",
-		.pm		= &hisi_thermal_pm_ops,
+		.pm		= pm_sleep_ptr(&hisi_thermal_pm_ops),
 		.of_match_table = of_hisi_thermal_match,
 	},
 	.probe	= hisi_thermal_probe,