linux-wandboard

pch_gbe: added the process of FIFO over run error

This patch added the processing which should be done to hardware,
when a FIFO over run error occurred.

Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>