net/mlx5e: Add get IPsec offload stats for uplink representor

As IPsec offload is supported in switchdev mode, HW stats can be can be
obtained from uplink rep.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/b43c91c452f1db9c35c10639a029aa10fd8b7895.1690802064.git.leon@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>