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

[Description]
1077944 [MT7988][Fix dm-verity failed due to non-hashed rootfs in factory.bin]
ed96c77 [kernel][mt7988][eth][Update 1000basex support and refactor to upstream style for the SGMII]
abcbc21 [Kernel][hnat][FiX hnat coverity issue]
0682ce8 [kernel][mt7988][eth][Update GMAC connection for the MT7988C]

[Release-log]

Change-Id: I7e0bc90277631c3cc90cb95fea64ce13253f0cfd
12 files changed