rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/post/cpu/mpc8xx/watchdog.c b/post/cpu/mpc8xx/watchdog.c
index f94158a..da191c2 100644
--- a/post/cpu/mpc8xx/watchdog.c
+++ b/post/cpu/mpc8xx/watchdog.c
@@ -36,7 +36,7 @@
 #include <post.h>
 #include <watchdog.h>
 
-#if CONFIG_POST & CFG_POST_WATCHDOG
+#if CONFIG_POST & CONFIG_SYS_POST_WATCHDOG
 
 static ulong gettbl (void)
 {
@@ -72,4 +72,4 @@
 	}
 }
 
-#endif /* CONFIG_POST & CFG_POST_WATCHDOG */
+#endif /* CONFIG_POST & CONFIG_SYS_POST_WATCHDOG */