etnaviv: initialize seqno of imported resources

Imported resources already have contents that we want to be copied to
texture resources derived from them. Set initial seqno of imported
resources to 1, just as if it had already been rendered to.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

src/gallium/drivers/etnaviv/etnaviv_resource.c

@@ -325,6 +325,8 @@ etna_resource_from_handle(struct pipe_screen *pscreen,
    if (!rsc->bo)
       goto fail;
 
+   rsc->seqno = 1;
+
    level->width = tmpl->width0;
    level->height = tmpl->height0;