net/mlx5e: Advertise mlx5 ethernet driver updates sk_buff md_dst for MACsec

mlx5 Rx flow steering and CQE handling enable the driver to be able to
update an skb's md_dst attribute as MACsec when MACsec traffic arrives when
a device is configured for offloading. Advertise this to the core stack to
take advantage of this capability.

Cc: stable@vger.kernel.org
Fixes: b7c9400c ("net/mlx5e: Implement MACsec Rx data path using MACsec skb_metadata_dst")
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: Benjamin Poirier <bpoirier@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://lore.kernel.org/r/20240423181319.115860-5-rrameshbabu@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c

@@ -1640,6 +1640,7 @@ static const struct macsec_ops macsec_offload_ops = {
 	.mdo_add_secy = mlx5e_macsec_add_secy,
 	.mdo_upd_secy = mlx5e_macsec_upd_secy,
 	.mdo_del_secy = mlx5e_macsec_del_secy,
+	.rx_uses_md_dst = true,
 };
 
 bool mlx5e_macsec_handle_tx_skb(struct mlx5e_macsec *macsec, struct sk_buff *skb)