feat(eth0): add MAE0621A phy support

lin

2025-07-30 fcd736bf35fd93b563e9bbf594f2aa7b62028cc9

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:INPUT,FORWARD,OUTPUT
-m tcpmss --mss 42;;FAIL
-p tcp -m tcpmss --mss 42;=;OK
-p tcp -m tcpmss --mss 42:12345;=;OK
-p tcp -m tcpmss --mss 42:65536;;FAIL