lstopo/draw: display PCI linkspeed below bridge instead of above

When above, it moves the bridge down, which means the PCI children
must be high enough to still touch the line coming from the bridge.
It would not work if there was a linespeed for the bridge but no
text shown for PCI devices (very small box).

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>

utils/lstopo/lstopo-draw.c

@@ -992,8 +992,8 @@ pci_device_draw(struct lstopo_output *loutput, hwloc_obj_t level, unsigned depth
   }
 }
 
-/* bridge object height: linkspeed + a small empty box */
-#define BRIDGE_HEIGHT (gridsize + fontsize + FONTGRIDSIZE)
+/* bridge object height: small empty box */
+#define BRIDGE_HEIGHT (gridsize)
 
 static void
 bridge_draw(struct lstopo_output *loutput, hwloc_obj_t level, unsigned depth, unsigned x, unsigned y)
@@ -1045,7 +1045,7 @@ bridge_draw(struct lstopo_output *loutput, hwloc_obj_t level, unsigned depth, un
 	      snprintf(text, sizeof(text), "%.0f", child->attr->pcidev.linkspeed);
 	    else
 	      snprintf(text, sizeof(text), "%0.1f", child->attr->pcidev.linkspeed);
-	    methods->text(loutput, style.t2, fontsize, depth-1, x + 3*gridsize, ymid - BRIDGE_HEIGHT/2, text);
+	    methods->text(loutput, style.t2, fontsize, depth-1, x + 3*gridsize, ymid + BRIDGE_HEIGHT/2, text);
 	  }
 	}
       }