post: Move CONFIG_SYS_POST to CFG_SYS_POST

Migrate the rest of the CONFIG_SYS_POST macros over to CFG_SYS_POST
namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/post/lib_powerpc/fpu/980619-1.c b/post/lib_powerpc/fpu/980619-1.c
index 415cd50..111a201 100644
--- a/post/lib_powerpc/fpu/980619-1.c
+++ b/post/lib_powerpc/fpu/980619-1.c
@@ -13,7 +13,7 @@
 
 GNU_FPOST_ATTR
 
-#if CFG_POST & CONFIG_SYS_POST_FPU
+#if CFG_POST & CFG_SYS_POST_FPU
 
 int fpu_post_test_math4 (void)
 {
@@ -39,4 +39,4 @@
 	return 0;
 }
 
-#endif /* CFG_POST & CONFIG_SYS_POST_FPU */
+#endif /* CFG_POST & CFG_SYS_POST_FPU */