[][Kernel][mt7988][eth][Add Ethernet API to adjust PSE OQ drop]

[Description]
Add Ethernet API to dynamically adjust PSE output port
drop configurations. It's exported for WiFi driver to
fine-tune hw path drop policy according to scenario.

[Release-log]
N/A


Change-Id: I2c63951d80d22b04346c9f3948bb8bb0033de1b6
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6794384
2 files changed