drivers/rtc/rtc-s5m.c: s5m_rtc_{suspend,resume}() should depend on CONFIG_PM_SLEEP

If CONFIG_PM_SLEEP=n:

drivers/rtc/rtc-s5m.c:643: warning: `s5m_rtc_resume' defined but not used
drivers/rtc/rtc-s5m.c:654: warning: `s5m_rtc_suspend' defined but not used
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-s5m.c

@@ -639,6 +639,7 @@ static void s5m_rtc_shutdown(struct platform_device *pdev)
 	s5m_rtc_enable_smpl(info, false);
 }
 
+#ifdef CONFIG_PM_SLEEP
 static int s5m_rtc_resume(struct device *dev)
 {
 	struct s5m_rtc_info *info = dev_get_drvdata(dev);
@@ -660,6 +661,7 @@ static int s5m_rtc_suspend(struct device *dev)
 
 	return ret;
 }
+#endif /* CONFIG_PM_SLEEP */
 
 static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume);