package/mesa3d: Really disable dri3 support

Fixes
http://autobuild.buildroot.net/results/49c/49c5ee7a8a0adff325f4cb484b91347de9e36ebb/
http://autobuild.buildroot.net/results/b02/b02f1c42ac9467626a21242770440e52baf9e4d2/
http://autobuild.buildroot.net/results/01a/01a3a3da833cbe8268af55320c6f354ef5b4f863/

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mesa3d/mesa3d.mk

@@ -75,7 +75,7 @@ endif
 
 ifeq ($(MESA3D_DRI_DRIVERS-y),)
 MESA3D_CONF_OPT += \
-	--without-dri-drivers --without-dri
+	--without-dri-drivers --without-dri --disable-dri3
 else
 ifeq ($(BR2_PACKAGE_XPROTO_DRI3PROTO),y)
 MESA3D_DEPENDENCIES += xlib_libxshmfence xproto_dri3proto xproto_presentproto