[][kernel][common][eth][enhance eth wifi SER]

[Description]
Fix ETH Reset detect condion

[Release-log]
-- default enable ETH reset
-- add GDM tx FSM to trigger reset
-- add xmac link down when prepare FE


Change-Id: I3ecf15d37f3258b37b50f93e0624be4760eda34e
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/9173872
5 files changed