[rdkb][common][bsp][Refactor and sync kernel from openwrt]

[Description]
90d38ce [kernel][mt7988][eth][Fix AQR113C 5GBASE-T compliance test mode4 tone1 fail issue]
fbbfefa [kernel][mt7988][eth][Correct phy-mode for the USXGMII]

[Release-log]

Change-Id: I2e0363352b500f9e2ecafc97b60198451b84310c
22 files changed