[ofw][patch][CORE,HW] remove PDO from the upper HCA interface

[Sean Hefty]

>Removing of PDO filed from the interface required changing of ib_register_ca
>prototype (for technical reasons).
>It is - an interface function, so the interface version number was increased
>(IB_CI_INTERFACE_VERSION=5).

The winmad/winverb changes look fine to me.

As long as we're bumping the interface version, should we do away with the
open_ca/close_ca calls?  Getting/putting the interface should be sufficient.

- Sean