vga: pass owner to vga_init_io

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/hw/display/vga_int.h b/hw/display/vga_int.h
index 5121a35..e641890 100644
--- a/hw/display/vga_int.h
+++ b/hw/display/vga_int.h
@@ -180,7 +180,7 @@
 void vga_common_init(VGACommonState *s, Object *obj);
 void vga_init(VGACommonState *s, Object *obj, MemoryRegion *address_space,
               MemoryRegion *address_space_io, bool init_vga_ports);
-MemoryRegion *vga_init_io(VGACommonState *s,
+MemoryRegion *vga_init_io(VGACommonState *s, Object *obj,
                           const MemoryRegionPortio **vga_ports,
                           const MemoryRegionPortio **vbe_ports);
 void vga_common_reset(VGACommonState *s);