[ofw] RoCE enabled vstat

[Hefty, Sean]

> > Hello Leonid,
> >   Is this vstat output what you expect when RoCE (aka mlx4_eth62.sys) is
> loaded?
> 
> What does ibstat show for the RoCE port ?

FYI - winverbs does not support RoCE, which prevents ibverbs from supporting RoCE, which in turn affects some umad reporting.

I don't think that adding RoCE support will be that difficult, and hopefully I can get that done within the next couple of weeks, depending on other work.

- Sean