sysbus: rename sysbus_init_mmio_region() to sysbus_init_mmio()

Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/hw/lm32_timer.c b/hw/lm32_timer.c
index a3a21ed..445847f 100644
--- a/hw/lm32_timer.c
+++ b/hw/lm32_timer.c
@@ -180,7 +180,7 @@
     ptimer_set_freq(s->ptimer, s->freq_hz);
 
     memory_region_init_io(&s->iomem, &timer_ops, s, "timer", R_MAX * 4);
-    sysbus_init_mmio_region(dev, &s->iomem);
+    sysbus_init_mmio(dev, &s->iomem);
 
     return 0;
 }