rtc: Add rtc support to 88PM80X PMIC

add rtc driver for MARVELL 88PM80X PMIC and enable rtc function.

Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 2973921..0d5b2b6 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -16,6 +16,7 @@
 # Keep the list ordered.
 
 obj-$(CONFIG_RTC_DRV_88PM860X)  += rtc-88pm860x.o
+obj-$(CONFIG_RTC_DRV_88PM80X)	+= rtc-88pm80x.o
 obj-$(CONFIG_RTC_DRV_AB3100)	+= rtc-ab3100.o
 obj-$(CONFIG_RTC_DRV_AB8500)	+= rtc-ab8500.o
 obj-$(CONFIG_RTC_DRV_AT32AP700X)+= rtc-at32ap700x.o