This patch fixed the issue which receives an unnecessary packet before link

When using PHY of GMII, an unnecessary packet is received,
And it becomes impossible to receive a packet after link up.
Signed-off-by: NToshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>