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

[Description]
68c27229 [kernel][mt7988][eth][remove XFRM offload related code]
8e0c3427 [kernel][common][eth][Add MIB read feature to the Aquantia PHY driver]
a6ac22c6 [kernel][mt7988][eth][i2.5Gphy: Add 20230731 version firmware]

[Release-log]

Change-Id: I6f24b3d195da60efd817f1472b9accf4eb0e067d
6 files changed