Declare vgahw_init where init.c can find it.
diff --git a/protos.h b/protos.h
index ce7a8eb..3ed1381 100644
--- a/protos.h
+++ b/protos.h
@@ -223,5 +223,6 @@
  */
 extern void ps2port_setup(void);
 extern void pci_setup(void);
+extern void vgahw_init(void);
 
 #endif /* PROTOS_H */