[][kernel][mt7981/mt7988][eth][phy: mediatek-ge: Refactor and change to upstream style]

[Description]
Refactor and change to upstream style

[Release-log]
N/A

Change-Id: I9f590dd3f287fb70f5fbae49ce4627b8b27bab1d
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7232839
1 file changed