powerpc/mpc85xx: Rewrite spin table to comply with ePAPR v1.1

Move spin table to cached memory to comply with ePAPR v1.1.
Load R3 with 64-bit value if CONFIG_SYS_PPC64 is defined.

'M' bit is set for DDR TLB to maintain cache coherence.

See details in doc/README.mpc85xx-spin-table.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/arch/powerpc/cpu/mpc85xx/mp.h b/arch/powerpc/cpu/mpc85xx/mp.h
index 87bac37..ad9950b 100644
--- a/arch/powerpc/cpu/mpc85xx/mp.h
+++ b/arch/powerpc/cpu/mpc85xx/mp.h
@@ -3,8 +3,7 @@
 
 #include <asm/mp.h>
 
-ulong get_spin_phys_addr(void);
-ulong get_spin_virt_addr(void);
+phys_addr_t get_spin_phys_addr(void);
 u32 get_my_id(void);
 int hold_cores_in_reset(int verbose);
 
@@ -16,7 +15,7 @@
 #define BOOT_ENTRY_PIR		5
 #define BOOT_ENTRY_R6_UPPER	6
 #define BOOT_ENTRY_R6_LOWER	7
-#define NUM_BOOT_ENTRY		8
+#define NUM_BOOT_ENTRY		16	/* pad to 64 bytes */
 #define SIZE_BOOT_ENTRY		(NUM_BOOT_ENTRY * sizeof(u32))
 
 #endif