net/mlx4: Cleanup kernel-doc warnings

$ git ls-files *.[ch] | egrep drivers/net/ethernet/mellanox/ | \
	xargs scripts/kernel-doc -none

drivers/net/ethernet/mellanox/mlx4/fw_qos.h:144:
warning: Function parameter or member 'in_param' not described ...
drivers/net/ethernet/mellanox/mlx4/fw_qos.h:144:
warning: Excess function parameter 'out_param' description ...
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reported-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>

drivers/net/ethernet/mellanox/mlx4/fw_qos.h

@@ -135,7 +135,7 @@ int mlx4_SET_VPORT_QOS_get(struct mlx4_dev *dev, u8 port, u8 vport,
  * @dev: mlx4_dev.
  * @port: Physical port number.
  * @vport: Vport id.
- * @out_param: Array of mlx4_vport_qos_param which holds the requested values.
+ * @in_param: Array of mlx4_vport_qos_param which holds the requested values.
  *
  * Returns 0 on success or a negative mlx4_core errno code.
  **/