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/flagadm/flash.c b/board/flagadm/flash.c
index fd0082c..3303707 100644
--- a/board/flagadm/flash.c
+++ b/board/flagadm/flash.c
@@ -81,7 +81,7 @@
 		      &flash_info[0]);
 #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_OFFSET,