mx35pdk: Add RTC support

MX35PDK has an MC13892 PMIC. Add RTC support.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Tested-by: Stefano Babic <sbabic@denx.de>

include/configs/mx35pdk.h

@@ -73,6 +73,7 @@
 #define CONFIG_PMIC_I2C
 #define CONFIG_PMIC_FSL
 #define CONFIG_SYS_FSL_PMIC_I2C_ADDR	0x08
+#define CONFIG_RTC_MC13XXX
 
 /*
  * MFD MC9SDZ60
@@ -111,6 +112,7 @@
 #define CONFIG_CMD_MII
 #define CONFIG_CMD_NET
 #define CONFIG_NET_RETRY_COUNT	100
+#define CONFIG_CMD_DATE
 
 #define CONFIG_BOOTDELAY	3