linux-imx

net: ethernet: ti: cpsw_ale: use const for API having pointer on mac address

It allows to use function under callbacks with same const qualifier of
mac address for farther changes.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>