net/mlx5: Add lag_tx_port_affinity capability bit

Add the lag_tx_port_affinity HCA capability bit that indicates that
setting port affinity of TISes is supported.
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

include/linux/mlx5/mlx5_ifc.h

@@ -1249,7 +1249,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         reserved_at_263[0x8];
 	u8         log_bf_reg_size[0x5];
 
-	u8         reserved_at_270[0xb];
+	u8         reserved_at_270[0x8];
+	u8         lag_tx_port_affinity[0x1];
+	u8         reserved_at_279[0x2];
 	u8         lag_master[0x1];
 	u8         num_lag_ports[0x4];