rtc: Add support for the rtc found in the MC13892 PMIC

The mfd driver for MC13783 recently got support for MC13892 and was
renamed accordingly from mc13783-core to mc13xxx-core.  Do the same for
rtc-mc13783.

The only relevant change is to use platform id's to tell the platform bus
that this driver is responsible for mc13892-rtc devices, too.
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/rtc/Kconfig

@@ -936,11 +936,12 @@ config RTC_DRV_PCAP
 	  If you say Y here you will get support for the RTC found on
 	  the PCAP2 ASIC used on some Motorola phones.
 
-config RTC_DRV_MC13783
-	depends on MFD_MC13783
-	tristate "Freescale MC13783 RTC"
+config RTC_DRV_MC13XXX
+	depends on MFD_MC13XXX
+	tristate "Freescale MC13xxx RTC"
 	help
-	  This enables support for the Freescale MC13783 PMIC RTC
+	  This enables support for the RTCs found on Freescale's PMICs
+	  MC13783 and MC13892.
 
 config RTC_DRV_MPC5121
 	tristate "Freescale MPC5121 built-in RTC"

drivers/rtc/Makefile

@@ -62,7 +62,7 @@ obj-$(CONFIG_RTC_DRV_MAX6900)	+= rtc-max6900.o
 obj-$(CONFIG_RTC_DRV_MAX8925)	+= rtc-max8925.o
 obj-$(CONFIG_RTC_DRV_MAX8998)	+= rtc-max8998.o
 obj-$(CONFIG_RTC_DRV_MAX6902)	+= rtc-max6902.o
-obj-$(CONFIG_RTC_DRV_MC13783)	+= rtc-mc13783.o
+obj-$(CONFIG_RTC_DRV_MC13XXX)	+= rtc-mc13xxx.o
 obj-$(CONFIG_RTC_DRV_MSM6242)	+= rtc-msm6242.o
 obj-$(CONFIG_RTC_DRV_MPC5121)	+= rtc-mpc5121.o
 obj-$(CONFIG_RTC_DRV_MV)	+= rtc-mv.o