sysbus: rename sysbus_init_mmio_region() to sysbus_init_mmio()

Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/hw/mst_fpga.c b/hw/mst_fpga.c
index cf9957b..9324702 100644
--- a/hw/mst_fpga.c
+++ b/hw/mst_fpga.c
@@ -207,7 +207,7 @@
 
 	memory_region_init_io(&s->iomem, &mst_fpga_ops, s,
 			    "fpga", 0x00100000);
-	sysbus_init_mmio_region(dev, &s->iomem);
+	sysbus_init_mmio(dev, &s->iomem);
 	return 0;
 }