Save initial random mac as permanent mac
Save initial random mac as permanent mac

See https://forum.pine64.org/showthread.php?tid=743

Resolves https://github.com/openhab/openhabian/issues/158

Signed-off-by: Thomas Dietrich <c99ae4c4ac93b8b46640185f7cbb7b5c01f9d752@tu-ilmenau.de>

ThomDietrich/openhabian,openhab/openhabian,openhab/openhabian,openhab/openhabian