rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/post/cpu/mpc8xx/cache.c b/post/cpu/mpc8xx/cache.c
index 36965a1..06cb501 100644
--- a/post/cpu/mpc8xx/cache.c
+++ b/post/cpu/mpc8xx/cache.c
@@ -32,7 +32,7 @@
 #include <post.h>
 #include <watchdog.h>
 
-#if CONFIG_POST & CFG_POST_CACHE
+#if CONFIG_POST & CONFIG_SYS_POST_CACHE
 
 #define CACHE_POST_SIZE	1024
 
@@ -75,4 +75,4 @@
 	return res;
 }
 
-#endif /* CONFIG_POST & CFG_POST_CACHE */
+#endif /* CONFIG_POST & CONFIG_SYS_POST_CACHE */