add gmac0 read mac form eeprom,pcie30x1

hc

2023-11-22 d0a428a6556ea5a006e22e28b0b1cd037885fe20

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# Locally computed:
sha256 9947fc705b0b841b5938c48b22dc33e9647ec0752bae66e50278df4f23f64959  go1.4.3.src.tar.gz