pci: pass I/O address space to new PCI bus

This lets us register BARs in the I/O address space.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/hw/ppc_oldworld.c b/hw/ppc_oldworld.c
index 585afd6..0f99eef 100644
--- a/hw/ppc_oldworld.c
+++ b/hw/ppc_oldworld.c
@@ -234,7 +234,9 @@
         hw_error("Only 6xx bus is supported on heathrow machine\n");
     }
     pic = heathrow_pic_init(&pic_mem_index, 1, heathrow_irqs);
-    pci_bus = pci_grackle_init(0xfec00000, pic, get_system_memory());
+    pci_bus = pci_grackle_init(0xfec00000, pic,
+                               get_system_memory(),
+                               get_system_io());
     pci_vga_init(pci_bus);
 
     escc_mem_index = escc_init(0x80013000, pic[0x0f], pic[0x10], serial_hds[0],