devif_loopback needs to be applied on l2 data, and was broken by commit below, now fix it.
| commit 8850dee74605890fa2a63c98f6aa816b16bcf239
| Author: chao an <anchao@xiaomi.com>
| Date: Sun Nov 27 03:31:07 2022 +0800
|
| net/devif: move preprocess of txpoll into common code
|
| Signed-off-by: chao an <anchao@xiaomi.com>
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>