[][kernel][mt7981/mt7988][eth][phy: mediatek-ge: Fix build error]

[Description]
Fix build error.

[Release-log]
N/A

Change-Id: I1e14e90f9f95637c9abcb11ab254e413ff35a1d9
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6819156
1 file changed