rename CFG_ENV macros to CONFIG_ENV

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/wepep250/flash.c b/board/wepep250/flash.c
index e2e08f7..6223ec1 100644
--- a/board/wepep250/flash.c
+++ b/board/wepep250/flash.c
@@ -142,8 +142,8 @@
 				   &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 WEP_FLASH_BANK_SIZE;
 }