Add option to get IB device after disabling RoCE. It is relevant if
there is vDPA class in device arguments list.
Use common device context in vDPA driver and remove the ctx field from
its private structure.
Signed-off-by: Michael Baum <michaelba@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
662d0dc671