[][kernel][common][eth][Fix mtk_tx_set_dma_desc hang issue]

[Description]
Fix mtk_tx_set_dma_desc hang issue.

If without this patch, driver may configure incorrect QID to TXD4.

[Release-log]
N/A

Change-Id: I74a8932d45bd5d9c2c463a8cc5c2aa3d17e48b83
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6513031
1 file changed