drivers/rtc/rtc-cmos.c: fix compilation warning when !CONFIG_PM_SLEEP

CONFIG_PM will be set also if only CONFIG_PM_RUNTIME is set which causes
the compiler to emit following warning:

drivers/rtc/rtc-cmos.c:845:12: warning: =E2=80=98cmos_resume=E2=80=99 defined but not used [-Wunused-function]

Fix this by using CONFIG_PM_SLEEP instead of CONFIG_PM and removing it
from the driver pm ops as this has been taken care by
SIMPLE_DEV_PM_OPS() already.

Signed-off-by: Mika Westerberg <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/rtc/rtc-cmos.c

···
 	cmos->dev = NULL;
 }
 
-#ifdef	CONFIG_PM
+#ifdef	CONFIG_PM_SLEEP
 
 static int cmos_suspend(struct device *dev)
 {
···
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(cmos_pm_ops, cmos_suspend, cmos_resume);
-
 #else
 
 static inline int cmos_poweroff(struct device *dev)
···
 }
 
 #endif
+
+static SIMPLE_DEV_PM_OPS(cmos_pm_ops, cmos_suspend, cmos_resume);
 
 /*----------------------------------------------------------------*/
 
···
 
 	/* flag ensures resume() gets called, and stops syslog spam */
 	.flags		= PNP_DRIVER_RES_DO_NOT_CHANGE,
-#ifdef CONFIG_PM_SLEEP
 	.driver		= {
 			.pm = &cmos_pm_ops,
 	},
-#endif
 };
 
 #endif	/* CONFIG_PNP */