use patched pciutils.

Index: hwaccess.h
--- hwaccess.h.orig
+++ hwaccess.h
@@ -30,7 +30,9 @@
  */
 #define index shadow_workaround_index
 
-#if !defined (__NetBSD__)
+#ifdef __OpenBSD__
+#include "pciutils/lib/pci.h"
+#elif !defined (__NetBSD__)
 #include <pci/pci.h>
 #else
 #include <pciutils/pci.h>