[PATCH v2] net/mlx5: support symmetric RSS hash function

[Matan Azrad]

From: Xueming(Steven) Li 
> This patch supports symmetric hash function that creating same hash result
> for bi-direction traffic which having reverse source and destination IP and L4
> port.
> 
> Since the hash algorithom is different than spec(XOR), leave a warning in
> validation.
> 
> Signed-off-by: Xueming Li <xuemingl at nvidia.com>

Acked-by: Matan Azrad <matan at nvidia.com>