feat(eth0): add MAE0621A phy support

lin

2025-07-30 fcd736bf35fd93b563e9bbf594f2aa7b62028cc9

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MatrixXf A = MatrixXf::Random(3, 2);
VectorXf b = VectorXf::Random(3);
cout << "The solution using the QR decomposition is:\n"
     << A.colPivHouseholderQr().solve(b) << endl;