Setup POST word for generic mpc85xx

Using PIC TFRR register for post word load/store for generic MPC85xx.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

include/post.h

@@ -57,8 +57,8 @@
 #define _POST_WORD_ADDR	(CONFIG_SYS_IMMR + CPM_POST_WORD_ADDR)
 
 #elif defined (CONFIG_MPC85xx)
-#include <asm/cpm_85xx.h>
-#define _POST_WORD_ADDR	(CONFIG_SYS_IMMR + CPM_POST_WORD_ADDR)
+#include <asm/immap_85xx.h>
+#define _POST_WORD_ADDR	(CONFIG_SYS_IMMR + offsetof(ccsr_pic_t, tfrr))
 
 #elif defined (CONFIG_4xx)
 #define _POST_WORD_ADDR \