x86_genfb_mtrr_init compile issue

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

Hello
I need the attached patch to compile a i386 INSTALL kernel.
is it OK to commit ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--

Index: x86/x86_autoconf.c
===================================================================
RCS file: /cvsroot/src/sys/arch/x86/x86/x86_autoconf.c,v
retrieving revision 1.54
diff -u -p -u -r1.54 x86_autoconf.c
--- x86/x86_autoconf.c  8 Feb 2011 10:52:56 -0000       1.54
+++ x86/x86_autoconf.c  9 Feb 2011 11:58:14 -0000
@@ -103,9 +103,11 @@ x86_genfb_set_mapreg(void *opaque, int i
 static bool
 x86_genfb_setmode(struct genfb_softc *sc, int newmode)
 {
+#if NGENFB > 0
        if (newmode == WSDISPLAYIO_MODE_EMUL)
                x86_genfb_mtrr_init(sc->sc_fboffset,
                    sc->sc_height * sc->sc_stride);
+#endif
        return true;
 }