[ofw] UVP library error creating address handles

[Sean Hefty]

>I looked into create_ah in Linux (for mlx4).
>They do not check port number and take sgid_index from input attributes.
>It suggest to do the same thing.

I'm fine with that.  It'll take me several days to get around to working on
those changes, but I should get to it eventually.  I will probably keep the IBAL
interface the same, and modify only the UVP interfaces, if that sounds okay.

- Sean