Fix wrong timeout (it should be in ms when passed to fdread_ex)

Bug reported by: https://github.com/jfpanisset

videohubctrl.c

 	if (test_data)
 		return 0;
 	memset(buf, 0, sizeof(buf));
-	while ((ret = fdread_ex(d->dev_fd, buf, sizeof(buf) - 1, timeout, 0, 1)) >= 0) {
+	while ((ret = fdread_ex(d->dev_fd, buf, sizeof(buf) - 1, timeout * 1000, 0, 1)) >= 0) {
 		ncommands += parse_text_buffer(d, buf);
 		memset(buf, 0, sizeof(buf));
 	}