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

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/include/configs/aria.h b/include/configs/aria.h
index f89fc57..06763c5 100644
--- a/include/configs/aria.h
+++ b/include/configs/aria.h
@@ -190,7 +190,7 @@
 
 /*
  * Backward compatible definitions,
- * so we do not have to change cpu/mpc512x/fixed_sdram.c
+ * so we do not have to change arch/ppc/cpu/mpc512x/fixed_sdram.c
  */
 #define	CONFIG_SYS_DDRCMD_EM2		(CONFIG_SYS_MICRON_EMR2)
 #define CONFIG_SYS_DDRCMD_EM3		(CONFIG_SYS_MICRON_EMR3)