rename CFG_ENV macros to CONFIG_ENV

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/dnp1110/flash.c b/board/dnp1110/flash.c
index 60874ba..84b820a 100644
--- a/board/dnp1110/flash.c
+++ b/board/dnp1110/flash.c
@@ -88,8 +88,8 @@
 		  &flash_info[0]);
 
     flash_protect(FLAG_PROTECT_SET,
-		  CFG_ENV_ADDR,
-		  CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+		  CONFIG_ENV_ADDR,
+		  CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
 		  &flash_info[0]);
 
     return size;