Note: due to the lack of documentation and poor driver implementation,
the network is very unstable with high loss rate. It will only work
once (like tftpboot operation) then the link will be dead.
Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
(cherry picked from commit e1e14ce8409b40a8e01d1482bcd603fc9c8521f7)
