[ofw] Mlx4 driver support

[Smith, Stan]

>> Even more curious, is the Mellanox WinOF drivers load
>> successfully while the open-source WinOF mlx4 HCA driver
>> never loads as MSFT PNP based on the load status of mlx4_bus
>> claims there is no match for mlx4_hca driver??
>>
> I'm not sure that I understand the question but what I can tell is
> this: 1) There is no real difference between the Mellanox WinOF and
> the open source one. (so if one goes up, so should the other).
> 2) When the driver goes at livefish mode it doesn't call create_pdo so
> windows doesn't know that a new driver has to be loaded.
>

ACK.
The lack of PDO creation explains why MSFT PNP can't find a device to match the mlx4_hca device which the WinOF installer just loaded into the PNP driver store.

Thanks,

Stan.