add stmac read mac form eeprom

hc

2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

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# Locally calculated
sha256 3b15515693bae1ebd14d914e46d388edfec2175829ea1576a7a0c8606ebbe639  devmem2.c
sha256 560913d09310d446920c16bd0aca1ff21d3b6fedd527195bacfc832ce343e0ae  devmem2.c.license