rename CFG_ENV_IS_IN_FLASH in CONFIG_ENV_IS_IN_FLASH

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/M5475EVB.h b/include/configs/M5475EVB.h
index af6723c..7913879 100644
--- a/include/configs/M5475EVB.h
+++ b/include/configs/M5475EVB.h
@@ -279,7 +279,7 @@
  */
 #define CFG_ENV_OFFSET		0x2000
 #define CFG_ENV_SECT_SIZE	0x2000
-#define CFG_ENV_IS_IN_FLASH	1
+#define CONFIG_ENV_IS_IN_FLASH	1
 #define CFG_ENV_IS_EMBEDDED	1
 
 /*-----------------------------------------------------------------------