net/mlx5: DR, Add STEv1 modify header logic

Add HW specific modify header fields and logic to STEv1 file.
Since STEv0 and STEv1 modify actions values are different, each
version has its own implementation.
Signed-off-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/steering/mlx5_ifc_dr_ste_v1.h

@@ -4,6 +4,10 @@
 #ifndef MLX5_IFC_DR_STE_V1_H
 #define MLX5_IFC_DR_STE_V1_H
 
+enum mlx5_ifc_ste_v1_modify_hdr_offset {
+	MLX5_MODIFY_HEADER_V1_QW_OFFSET = 0x20,
+};
+
 struct mlx5_ifc_ste_single_action_flow_tag_v1_bits {
 	u8         action_id[0x8];
 	u8         flow_tag[0x18];