rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/post/lib_ppc/threei.c b/post/lib_ppc/threei.c
index 89f8fc8..31953f9 100644
--- a/post/lib_ppc/threei.c
+++ b/post/lib_ppc/threei.c
@@ -37,7 +37,7 @@
 #include <post.h>
 #include "cpu_asm.h"
 
-#if CONFIG_POST & CFG_POST_CPU
+#if CONFIG_POST & CONFIG_SYS_POST_CPU
 
 extern void cpu_post_exec_21 (ulong *code, ulong *cr, ulong *res, ulong op);
 extern ulong cpu_post_makecr (long v);