SBus support for OpenBSD/sparc64

Index: hw/xfree86/common/xf86fbBus.c
--- hw/xfree86/common/xf86fbBus.c.orig
+++ hw/xfree86/common/xf86fbBus.c
@@ -62,7 +62,7 @@ xf86ClaimFbSlot(DriverPtr drvp, int chipset, GDevPtr d
     if (pciSlotClaimed)
         return -1;
 #endif
-#if defined(__sparc__) || defined (__sparc64__)
+#if (defined(__sparc__) || defined (__sparc64__)) &&!defined(__OpenBSD__)
     if (sbusSlotClaimed)
         return -1;
 #endif