test_output: fix build failure

Use new uterm_video constructor. This requires hard-coding the DRM card
but this is needed until we use the uterm_monitor interface.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

tests/test_output.c

@@ -182,7 +182,7 @@ int main(int argc, char **argv)
 		goto err_fail;
 
 	log_notice("Creating video object...");
-	ret = uterm_video_new(&video, UTERM_VIDEO_DRM, eloop);
+	ret = uterm_video_new(&video, eloop, UTERM_VIDEO_DRM, "/dev/dri/card0");
 	if (ret)
 		goto err_exit;