add stmac read mac form eeprom

hc

2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

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SSV_DFS_FILE=/sys/kernel/debug/ssv/ssv_cmd
if [ -f $SSV_DFS_FILE ]; then
    echo "$*" > $SSV_DFS_FILE
    cat $SSV_DFS_FILE
fi