[ofw] ConnectX driver code

[Sean Hefty]

>    I've added a branch \ConnectX, presenting the code of the new
> driver, which supports Mellanox ConnectX HCAs.
> The driver is in the developing phase yet, but with some work it
> can be built, installed and run.
> See more details in readme file in the root of the branch.
 
I'll look at the branch when I get a chance.  As a request, if you haven't done
so, can you please make sure that all patches are self-contained and limited to
a single topic?  This makes it easier to review and coordinate changes between
the different branches.

Thanks,
Sean