add stmac read mac form eeprom

hc

2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

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#!/bin/sh
 
candidate="$1"
 
xzcat=`which $candidate 2>/dev/null`
if [ ! -x "$xzcat" ]; then
    xzcat=`which xzcat 2>/dev/null`
    if [ ! -x "$xzcat" ]; then
        # echo nothing: no suitable xzcat found
        exit 1
    fi
fi
 
echo $xzcat