rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/drivers/rtc/max6900.c b/drivers/rtc/max6900.c
index 758d7b7..7c99c5e 100644
--- a/drivers/rtc/max6900.c
+++ b/drivers/rtc/max6900.c
@@ -34,20 +34,20 @@
 
 #if defined(CONFIG_CMD_DATE)
 
-#ifndef	CFG_I2C_RTC_ADDR
-#define	CFG_I2C_RTC_ADDR	0x50
+#ifndef	CONFIG_SYS_I2C_RTC_ADDR
+#define	CONFIG_SYS_I2C_RTC_ADDR	0x50
 #endif
 
 /* ------------------------------------------------------------------------- */
 
 static uchar rtc_read (uchar reg)
 {
-	return (i2c_reg_read (CFG_I2C_RTC_ADDR, reg));
+	return (i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, reg));
 }
 
 static void rtc_write (uchar reg, uchar val)
 {
-	i2c_reg_write (CFG_I2C_RTC_ADDR, reg, val);
+	i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val);
 	udelay(2500);
 }