[][kernel][mt7988][eth][i2.5Gphy: Add 20230518 version firmware]

[Description]
Add configuration related to EEE function and improve 2.5G and GBE link
stability

DMb md5sum: bb7df04e1b0a2570657527a7e108ae23
PMb md5sum: efbb43ff4c6c70ccff2ca8045ef0e416

[Release-log]
N/A

Change-Id: I44e8996f23c4ff4bfafe1ba5a70ad9ca2c403ee2
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7510733
2 files changed