net/mlx5e: Move MLX5E_RX_ERR_CQE macro

MLX5E_RX_ERR_CQE Macro is used only in data-path, move it to the
appropriate header file.

Signed-off-by: Eran Ben Elisha <eranbe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>