rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/common/cmd_ext2.c b/common/cmd_ext2.c
index cfd4f64..9c43792 100644
--- a/common/cmd_ext2.c
+++ b/common/cmd_ext2.c
@@ -142,7 +142,7 @@
 		if (addr_str != NULL) {
 			addr = simple_strtoul (addr_str, NULL, 16);
 		} else {
-			addr = CFG_LOAD_ADDR;
+			addr = CONFIG_SYS_LOAD_ADDR;
 		}
 		filename = getenv ("bootfile");
 		count = 0;