Fix NETDEV WATCHDOG timeout on startup by adding missing register
writes that properly setup SGMII.
Signed-off-by: NThor Thayer <thor.thayer@linux.intel.com>
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>