rename CFG_ENV macros to CONFIG_ENV

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/gcplus/flash.c b/board/gcplus/flash.c
index 36d7363..48f33b2 100644
--- a/board/gcplus/flash.c
+++ b/board/gcplus/flash.c
@@ -87,8 +87,8 @@
 		      CFG_FLASH_BASE + monitor_flash_len - 1, &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;
 }