Input: twl4030-vibra - really switch from #if to #ifdef

The commit f3761c0779 claimed to change
#if to #ifdef to avoid compiler warnings when CONFIG_PM_SLEEP is not
defined, but failed at that.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/misc/twl4030-vibra.c

@@ -172,7 +172,7 @@ static void twl4030_vibra_close(struct input_dev *input)
 }
 
 /*** Module ***/
-#if CONFIG_PM_SLEEP
+#ifdef CONFIG_PM_SLEEP
 static int twl4030_vibra_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);