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/MPC8572DS.h b/include/configs/MPC8572DS.h
index 8c4aa7d..0277a42 100644
--- a/include/configs/MPC8572DS.h
+++ b/include/configs/MPC8572DS.h
@@ -384,6 +384,7 @@
 #define CONFIG_SYS_PCIE3_MEM_BUS	0x80000000
 #define CONFIG_SYS_PCIE3_MEM_PHYS	0x80000000
 #define CONFIG_SYS_PCIE3_MEM_SIZE	0x20000000	/* 512M */
+#define CONFIG_SYS_PCIE3_IO_VIRT	0xffc00000
 #define CONFIG_SYS_PCIE3_IO_BUS	0x00000000
 #define CONFIG_SYS_PCIE3_IO_PHYS	0xffc00000
 #define CONFIG_SYS_PCIE3_IO_SIZE	0x00010000	/* 64k */
@@ -393,6 +394,7 @@
 #define CONFIG_SYS_PCIE2_MEM_BUS	0xa0000000
 #define CONFIG_SYS_PCIE2_MEM_PHYS	0xa0000000
 #define CONFIG_SYS_PCIE2_MEM_SIZE	0x20000000	/* 512M */
+#define CONFIG_SYS_PCIE2_IO_VIRT	0xffc10000
 #define CONFIG_SYS_PCIE2_IO_BUS	0x00000000
 #define CONFIG_SYS_PCIE2_IO_PHYS	0xffc10000
 #define CONFIG_SYS_PCIE2_IO_SIZE	0x00010000	/* 64k */
@@ -402,6 +404,7 @@
 #define CONFIG_SYS_PCIE1_MEM_BUS	0xc0000000
 #define CONFIG_SYS_PCIE1_MEM_PHYS	0xc0000000
 #define CONFIG_SYS_PCIE1_MEM_SIZE	0x20000000	/* 512M */
+#define CONFIG_SYS_PCIE1_IO_VIRT	0xffc20000
 #define CONFIG_SYS_PCIE1_IO_BUS	0x00000000
 #define CONFIG_SYS_PCIE1_IO_PHYS	0xffc20000
 #define CONFIG_SYS_PCIE1_IO_SIZE	0x00010000	/* 64k */
@@ -409,7 +412,7 @@
 #if defined(CONFIG_PCI)
 
 /*PCIE video card used*/
-#define VIDEO_IO_OFFSET		CONFIG_SYS_PCIE1_IO_PHYS
+#define VIDEO_IO_OFFSET		CONFIG_SYS_PCIE1_IO_VIRT
 
 /* video */
 #define CONFIG_VIDEO