net/mlx5: Add support to ext_* fields introduced in Port Type and Speed register

This patch exposes new link modes (including 50Gbps per lane), and ext_*
fields which describes the new link modes in Port Type and Speed
register (PTYS).
Access functions, translation functions (speed <-> HW bits) and
link max speed function were modified.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/infiniband/hw/mlx5/main.c

@@ -421,7 +421,8 @@ static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
 				   mdev_port_num);
 	if (err)
 		goto out;
-	eth_prot_oper = MLX5_GET(ptys_reg, out, eth_proto_oper);
+	eth_prot_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, false,
+					   eth_proto_oper);
 
 	props->active_width     = IB_WIDTH_4X;
 	props->active_speed     = IB_SPEED_QDR;