rename CFG_ENV macros to CONFIG_ENV

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/modnet50/flash.c b/board/modnet50/flash.c
index a50639e..fb12e03 100644
--- a/board/modnet50/flash.c
+++ b/board/modnet50/flash.c
@@ -181,8 +181,8 @@
 		       &flash_info[0]);
 
 	flash_protect (FLAG_PROTECT_SET,
-		       CFG_ENV_ADDR,
-		       CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]);
+		       CONFIG_ENV_ADDR,
+		       CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
 
 	return size;
 }