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

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/siemens/pcu_e/u-boot.lds b/board/siemens/pcu_e/u-boot.lds
index cc8ad7d..ff2f566 100644
--- a/board/siemens/pcu_e/u-boot.lds
+++ b/board/siemens/pcu_e/u-boot.lds
@@ -52,7 +52,7 @@
   .plt : { *(.plt) }
   .text      :
   {
-    cpu/mpc8xx/start.o	(.text)
+    arch/ppc/cpu/mpc8xx/start.o	(.text)
     common/env_embedded.o(.text)
     *(.text)
     *(.got1)
diff --git a/board/siemens/pcu_e/u-boot.lds.debug b/board/siemens/pcu_e/u-boot.lds.debug
index 251ee9b..fcf2cbb 100644
--- a/board/siemens/pcu_e/u-boot.lds.debug
+++ b/board/siemens/pcu_e/u-boot.lds.debug
@@ -55,7 +55,7 @@
     /* WARNING - the following is hand-optimized to fit within	*/
     /* the sector layout of our flash chips!	XXX FIXME XXX	*/
 
-    cpu/mpc8xx/start.o	(.text)
+    arch/ppc/cpu/mpc8xx/start.o	(.text)
     common/dlmalloc.o	(.text)
     lib/vsprintf.o	(.text)
     lib/crc32.o		(.text)