common/mlx5: enable compilation on Windows
common/mlx5: enable compilation on Windows

Enable mlx5 common driver on Windows with clang compilation.

Signed-off-by: Ophir Munk <da2dc1f9ae64c8bd405ef0cf049405a44490d24e@nvidia.com>
Signed-off-by: Tal Shnaiderman <702b239bde288cdc7d5c76bd4c8918a952378613@nvidia.com>
Acked-by: Matan Azrad <6969f5f553ad7652679a585a85d7321babc90464@nvidia.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk