85xx: separate PIXIS virtual from physical address

Added a PIXIS_BASE_PHYS for use as the physical address and maintain
PIXIS_BASE as the virtual address of the PIXIS fpga registers.

This allows us to deal with 36-bit phys on these boards in the future.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Andy Fleming <afleming@freescale.com>
diff --git a/board/freescale/mpc8572ds/law.c b/board/freescale/mpc8572ds/law.c
index 83eb681..9814479 100644
--- a/board/freescale/mpc8572ds/law.c
+++ b/board/freescale/mpc8572ds/law.c
@@ -35,7 +35,7 @@
 	SET_LAW(CONFIG_SYS_PCIE2_IO_PHYS, LAW_SIZE_64K, LAW_TRGT_IF_PCIE_2),
 	SET_LAW(CONFIG_SYS_PCIE3_MEM_PHYS, LAWAR_SIZE_512M, LAW_TRGT_IF_PCIE_3),
 	SET_LAW(CONFIG_SYS_PCIE3_IO_PHYS, LAW_SIZE_64K, LAW_TRGT_IF_PCIE_3),
-	SET_LAW(PIXIS_BASE, LAW_SIZE_4K, LAW_TRGT_IF_LBC),
+	SET_LAW(PIXIS_BASE_PHYS, LAW_SIZE_4K, LAW_TRGT_IF_LBC),
 	SET_LAW(CONFIG_SYS_NAND_BASE_PHYS, LAW_SIZE_1M, LAW_TRGT_IF_LBC),
 };