mfd: t7l66xb: Remove #ifdef guards for PM related functions

Use the new pm_sleep_ptr() macro to handle the .suspend/.resume
callbacks.

This macro allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.

This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Lee Jones <lee@kernel.org>

drivers/mfd/t7l66xb.c

@@ -257,7 +257,6 @@ static void t7l66xb_detach_irq(struct platform_device *dev)
 
 /*--------------------------------------------------------------------------*/
 
-#ifdef CONFIG_PM
 static int t7l66xb_suspend(struct platform_device *dev, pm_message_t state)
 {
 	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
@@ -288,10 +287,6 @@ static int t7l66xb_resume(struct platform_device *dev)
 
 	return 0;
 }
-#else
-#define t7l66xb_suspend NULL
-#define t7l66xb_resume	NULL
-#endif
 
 /*--------------------------------------------------------------------------*/
 
@@ -416,8 +411,8 @@ static struct platform_driver t7l66xb_platform_driver = {
 	.driver = {
 		.name	= "t7l66xb",
 	},
-	.suspend	= t7l66xb_suspend,
-	.resume		= t7l66xb_resume,
+	.suspend	= pm_sleep_ptr(t7l66xb_suspend),
+	.resume		= pm_sleep_ptr(t7l66xb_resume),
 	.probe		= t7l66xb_probe,
 	.remove		= t7l66xb_remove,
 };