mmc: sdhci-of-esdhc: Simplify code by using SIMPLE_DEV_PM_OPS

Let's use the SIMPLE_DEV_PM_OPS macro when declaring/assigning the system
PM callbacks, as the code gets simplified.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-of-esdhc.c

@@ -481,7 +481,7 @@ static void esdhc_reset(struct sdhci_host *host, u8 mask)
 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static u32 esdhc_proctl;
 static int esdhc_of_suspend(struct device *dev)
 {
@@ -504,16 +504,12 @@ static int esdhc_of_resume(struct device *dev)
 	}
 	return ret;
 }
-
-static const struct dev_pm_ops esdhc_pmops = {
-	.suspend	= esdhc_of_suspend,
-	.resume		= esdhc_of_resume,
-};
-#define ESDHC_PMOPS (&esdhc_pmops)
-#else
-#define ESDHC_PMOPS NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(esdhc_of_dev_pm_ops,
+			esdhc_of_suspend,
+			esdhc_of_resume);
+
 static const struct sdhci_ops sdhci_esdhc_be_ops = {
 	.read_l = esdhc_be_readl,
 	.read_w = esdhc_be_readw,
@@ -657,7 +653,7 @@ static struct platform_driver sdhci_esdhc_driver = {
 	.driver = {
 		.name = "sdhci-esdhc",
 		.of_match_table = sdhci_esdhc_of_match,
-		.pm = ESDHC_PMOPS,
+		.pm = &esdhc_of_dev_pm_ops,
 	},
 	.probe = sdhci_esdhc_probe,
 	.remove = sdhci_pltfm_unregister,