net/mlx5: Add IFC bits and enums for flow meter

[ Upstream commit f5d23ee1 ]

Add/extend structure layouts and defines for flow meter.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Ariel Levkovich <lariel@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Stable-dep-of: 452ef7f8 ("net/mlx5: Add missing masks and QoS bit masks for scheduling elements")
Signed-off-by: Sasha Levin <sashal@kernel.org>