[][kernel][mt7988][eth][mediatek-ge: Fix TX power saving]

[Description]
Fix TX power saving. Remove slave mode finetune.
(There will be another finetuned settings.)

[Release-log]
N/A

Change-Id: I3111c9e576153facca5c3e98753563373277d31f
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6627978
2 files changed