rename CFG_ENV macros to CONFIG_ENV

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/DU405.h b/include/configs/DU405.h
index 811b9c3..7debc69 100644
--- a/include/configs/DU405.h
+++ b/include/configs/DU405.h
@@ -228,8 +228,8 @@
 #define CFG_EEPROM_PAGE_WRITE_ENABLE
 
 #define CONFIG_ENV_IS_IN_EEPROM	1	/* use EEPROM for environment vars */
-#define CFG_ENV_OFFSET		0x000	/* environment starts at the beginning of the EEPROM */
-#define CFG_ENV_SIZE		0x400	/* 1024 bytes may be used for env vars */
+#define CONFIG_ENV_OFFSET		0x000	/* environment starts at the beginning of the EEPROM */
+#define CONFIG_ENV_SIZE		0x400	/* 1024 bytes may be used for env vars */
 				   /* total size of a CAT24WC08 is 1024 bytes */
 
 /*