rtc: PCF50633 rtc driver

Signed-off-by: Balaji Rao <balajirrao@openmoko.org>
Cc: Andy Green <andy@openmoko.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Paul Gortmaker <a.zummo@towertech.it>
Cc: rtc-linux@googlegroups.com
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 4ad831d..cced4d1 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -502,6 +502,13 @@
 	  This driver can also be built as a module. If so, the module
 	  will be called "rtc-wm8350".
 
+config RTC_DRV_PCF50633
+	depends on MFD_PCF50633
+	tristate "NXP PCF50633 RTC"
+	help
+	  If you say yes here you get support for the RTC subsystem of the
+	  NXP PCF50633 used in embedded systems.
+
 comment "on-CPU RTC drivers"
 
 config RTC_DRV_OMAP