rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/drivers/rtc/ds164x.c b/drivers/rtc/ds164x.c
index 00494b3..1e96679 100644
--- a/drivers/rtc/ds164x.c
+++ b/drivers/rtc/ds164x.c
@@ -49,7 +49,7 @@
 /*
  * DS164x registers layout
  */
-#define RTC_BASE		( CFG_NVRAM_BASE_ADDR + CFG_NVRAM_SIZE )
+#define RTC_BASE		( CONFIG_SYS_NVRAM_BASE_ADDR + CONFIG_SYS_NVRAM_SIZE )
 
 #define RTC_YEAR		( RTC_BASE + 0x07 )
 #define RTC_MONTH		( RTC_BASE + 0x06 )