85xx: Introduce CONFIG_SYS_PCI*_IO_VIRT for FSL boards

Introduce a new define to seperate out the virtual address that PCI
IO space is at from the physical address.  In most situations these are
mapped 1:1.  However any code accessing the bus should use VIRT.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Andy Fleming <afleming@freescale.com>
diff --git a/include/configs/MPC8541CDS.h b/include/configs/MPC8541CDS.h
index ed628a0..fa82fbc 100644
--- a/include/configs/MPC8541CDS.h
+++ b/include/configs/MPC8541CDS.h
@@ -345,6 +345,7 @@
 #define CONFIG_SYS_PCI1_MEM_BUS	0x80000000
 #define CONFIG_SYS_PCI1_MEM_PHYS	0x80000000
 #define CONFIG_SYS_PCI1_MEM_SIZE	0x20000000	/* 512M */
+#define CONFIG_SYS_PCI1_IO_VIRT	0xe2000000
 #define CONFIG_SYS_PCI1_IO_BUS	0x00000000
 #define CONFIG_SYS_PCI1_IO_PHYS	0xe2000000
 #define CONFIG_SYS_PCI1_IO_SIZE	0x100000	/* 1M */
@@ -353,6 +354,7 @@
 #define CONFIG_SYS_PCI2_MEM_BUS	0xa0000000
 #define CONFIG_SYS_PCI2_MEM_PHYS	0xa0000000
 #define CONFIG_SYS_PCI2_MEM_SIZE	0x20000000	/* 512M */
+#define CONFIG_SYS_PCI2_IO_VIRT	0xe2100000
 #define CONFIG_SYS_PCI2_IO_BUS	0x00000000
 #define CONFIG_SYS_PCI2_IO_PHYS	0xe2100000
 #define CONFIG_SYS_PCI2_IO_SIZE	0x100000	/* 1M */