rename CFG_ENV macros to CONFIG_ENV

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/sc520_cdp/flash.c b/board/sc520_cdp/flash.c
index d52a847..493d51a 100644
--- a/board/sc520_cdp/flash.c
+++ b/board/sc520_cdp/flash.c
@@ -276,10 +276,10 @@
 		      i386boot_start,
 		      i386boot_end,
 		      &flash_info[0]);
-#ifdef CFG_ENV_ADDR
+#ifdef CONFIG_ENV_ADDR
 	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]);
 #endif
 	return size;