net: ethernet: wiznet: add CONFIG_PM_SLEEP to suspend/resume functions

Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following
build warning when CONFIG_PM_SLEEP is not selected. This is because
sleep PM callbacks defined by SIMPLE_DEV_PM_OPS are only used when
the CONFIG_PM_SLEEP is enabled.

drivers/net/ethernet/wiznet/w5100.c:758:12: warning: 'w5100_suspend' defined but not used [-Wunused-function]
drivers/net/ethernet/wiznet/w5100.c:773:12: warning: 'w5100_resume' defined but not used [-Wunused-function]
drivers/net/ethernet/wiznet/w5300.c:670:12: warning: 'w5300_suspend' defined but not used [-Wunused-function]
drivers/net/ethernet/wiznet/w5300.c:685:12: warning: 'w5300_resume' defined but not used [-Wunused-function]

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/wiznet/w5100.c

@@ -754,7 +754,7 @@ static int w5100_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int w5100_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
@@ -787,7 +787,7 @@ static int w5100_resume(struct device *dev)
 	}
 	return 0;
 }
-#endif /* CONFIG_PM */
+#endif /* CONFIG_PM_SLEEP */
 
 static SIMPLE_DEV_PM_OPS(w5100_pm_ops, w5100_suspend, w5100_resume);
 

drivers/net/ethernet/wiznet/w5300.c

@@ -666,7 +666,7 @@ static int w5300_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int w5300_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
@@ -699,7 +699,7 @@ static int w5300_resume(struct device *dev)
 	}
 	return 0;
 }
-#endif /* CONFIG_PM */
+#endif /* CONFIG_PM_SLEEP */
 
 static SIMPLE_DEV_PM_OPS(w5300_pm_ops, w5300_suspend, w5300_resume);