Some of the ethtool entries to control the port should be supported by
the uplink rep netdev in switchdev mode, add them.

While here, add also the get/set coalesce entries for all reps.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>