ixgbe: add the 2.5G and 5G speeds in auto-negotiation for E610

ixgbe: add the 2.5G and 5G speeds in auto-negotiation for E610

The auto-negotiation limitation for 2.5G and 5G speeds is no longer true
for X550 successors like E610 adapter. Enable the 2.5G and 5G speeds in
auto-negotiation for E610 at driver load.

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Piotr Kwapulinski <piotr.kwapulinski@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>