ppc: Move cpu/$CPU to arch/ppc/cpu/$CPU

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/nc650/u-boot.lds.debug b/board/nc650/u-boot.lds.debug
index 5f8dc9d..1405b17 100644
--- a/board/nc650/u-boot.lds.debug
+++ b/board/nc650/u-boot.lds.debug
@@ -52,7 +52,7 @@
   .plt : { *(.plt) }
   .text      :
   {
-    cpu/mpc8xx/start.o	(.text)
+    arch/ppc/cpu/mpc8xx/start.o	(.text)
     *(.text)
     *(.got1)
   }