rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/post/lib_ppc/fpu/mul-subnormal-single-1.c b/post/lib_ppc/fpu/mul-subnormal-single-1.c
index 7e6fe87..9c514e1 100644
--- a/post/lib_ppc/fpu/mul-subnormal-single-1.c
+++ b/post/lib_ppc/fpu/mul-subnormal-single-1.c
@@ -30,7 +30,7 @@
 
 #include <post.h>
 
-#if CONFIG_POST & CFG_POST_FPU
+#if CONFIG_POST & CONFIG_SYS_POST_FPU
 
 union uf
 {
@@ -97,4 +97,4 @@
 	return 0;
 }
 
-#endif /* CONFIG_POST & CFG_POST_FPU */
+#endif /* CONFIG_POST & CONFIG_SYS_POST_FPU */