rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c
index c5e74b8..504fd10 100644
--- a/drivers/net/bfin_mac.c
+++ b/drivers/net/bfin_mac.c
@@ -466,7 +466,7 @@
 	return buf;
 }
 
-#if defined(CONFIG_POST) && defined(CFG_POST_ETHER)
+#if defined(CONFIG_POST) && defined(CONFIG_SYS_POST_ETHER)
 int ether_post_test(int flags)
 {
 	uchar buf[64];