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/board/evb64260/flash.c b/board/evb64260/flash.c
index 6ab23dc..1691e10 100644
--- a/board/evb64260/flash.c
+++ b/board/evb64260/flash.c
@@ -119,7 +119,7 @@
 	              flash_get_info(CFG_MONITOR_BASE));
 #endif
 
-#ifdef  CFG_ENV_IS_IN_FLASH
+#ifdef  CONFIG_ENV_IS_IN_FLASH
 	/* ENV protection ON by default */
 	flash_protect(FLAG_PROTECT_SET,
 	              CFG_ENV_ADDR,