[][Add Intel GPY211 2.5G PHY Support to MT7981]

Add Intel GPY211 2.5G PHY Support to MT7981.
1. Add reset gpio14 setting to dts files.
2. Enable gpy211 simple driver which enable rate adaption function.

MT7981 RFB GMAC uses HSGMII force 2.5G fixed mode to connect to GPY211
2.5G PHY with rate adaption enabled.


Change-Id: Ia7704070fc0d236a2eac610ea6a8584531dea428
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5480985
3 files changed