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: NKumar Gala <galak@kernel.crashing.org> Acked-by: NAndy Fleming <afleming@freescale.com>
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