rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/drivers/rtc/ds174x.c b/drivers/rtc/ds174x.c
index 43e6ab7..738d118 100644
--- a/drivers/rtc/ds174x.c
+++ b/drivers/rtc/ds174x.c
@@ -40,7 +40,7 @@
 static uchar bin2bcd   (unsigned int n);
 static unsigned bcd2bin(uchar c);
 
-#define RTC_BASE		( CFG_NVRAM_SIZE + CFG_NVRAM_BASE_ADDR )
+#define RTC_BASE		( CONFIG_SYS_NVRAM_SIZE + CONFIG_SYS_NVRAM_BASE_ADDR )
 
 #define RTC_YEAR		( RTC_BASE + 7 )
 #define RTC_MONTH		( RTC_BASE + 6 )