powerpc/8xxx: Add is_core_disabled to remove disabled cores from dtb

If we explicitly disabled a core remove it from the dtb we pass on to
the kernel.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/cpu/mpc86xx/fdt.c b/arch/powerpc/cpu/mpc86xx/fdt.c
index 51f3f4c..ff89ee5 100644
--- a/arch/powerpc/cpu/mpc86xx/fdt.c
+++ b/arch/powerpc/cpu/mpc86xx/fdt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2008 Freescale Semiconductor, Inc.
+ * Copyright 2008,2010 Freescale Semiconductor, Inc.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -55,6 +55,7 @@
 	off = fdt_add_mem_rsv(blob, bootpg, (u64)4096);
 	if (off < 0)
 		printf("%s: %s\n", __FUNCTION__, fdt_strerror(off));
-#endif
+
 	ft_fixup_num_cores(blob);
+#endif
 }