net/mlx5: Expose ts_cqe_metadata_size2wqe_counter

Add capability field which indicates the mask for wqe_counter which
connects between loopback CQE and the original WQE. With this connection
the driver can identify lost of the loopback CQE and reply PTP
synchronization with timestamp given in the original CQE.
Signed-off-by: NAya Levin <ayal@nvidia.com>
Reviewed-by: NTariq Toukan <tariqt@nvidia.com>
Signed-off-by: NSaeed Mahameed <saeedm@nvidia.com>

include/linux/mlx5/mlx5_ifc.h

@@ -1833,7 +1833,11 @@ struct mlx5_ifc_cmd_hca_cap_2_bits {
 	u8	   sw_vhca_id[0xe];
 	u8	   reserved_at_230[0x10];
 
-	u8	   reserved_at_240[0x5c0];
+	u8	   reserved_at_240[0xb];
+	u8	   ts_cqe_metadata_size2wqe_counter[0x5];
+	u8	   reserved_at_250[0x10];
+
+	u8	   reserved_at_260[0x5a0];
 };
 
 enum mlx5_ifc_flow_destination_type {