usb: phy: am335x: Use SIMPLE_DEV_PM_OPS macro

Use SIMPLE_DEV_PM_OPS macro and remove DEV_PM_OPS macro, in order
to make the code simpler.
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/phy/phy-am335x.c

@@ -122,16 +122,10 @@ static int am335x_phy_resume(struct device *dev)
 
 	return 0;
 }
-
-static const struct dev_pm_ops am335x_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(am335x_phy_suspend, am335x_phy_resume)
-};
-
-#define DEV_PM_OPS     (&am335x_pm_ops)
-#else
-#define DEV_PM_OPS     NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(am335x_pm_ops, am335x_phy_suspend, am335x_phy_resume);
+
 static const struct of_device_id am335x_phy_ids[] = {
 	{ .compatible = "ti,am335x-usb-phy" },
 	{ }
@@ -144,7 +138,7 @@ static struct platform_driver am335x_phy_driver = {
 	.driver         = {
 		.name   = "am335x-phy-driver",
 		.owner  = THIS_MODULE,
-		.pm = DEV_PM_OPS,
+		.pm = &am335x_pm_ops,
 		.of_match_table = am335x_phy_ids,
 	},
 };