rename CFG_ENV_IS_IN_EEPROM in CONFIG_ENV_IS_IN_EEPROM

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/xilinx/ml300/ml300.c b/board/xilinx/ml300/ml300.c
index 5d493eeb..e64becc 100644
--- a/board/xilinx/ml300/ml300.c
+++ b/board/xilinx/ml300/ml300.c
@@ -42,7 +42,7 @@
 #include <common.h>
 #include <asm/processor.h>
 
-#ifdef CFG_ENV_IS_IN_EEPROM
+#ifdef CONFIG_ENV_IS_IN_EEPROM
 extern void convert_env(void);
 #endif