RDMA/efa: Add support for node guid

Propagate the unique, per device, ID in the device attributes to the
standard node_guid value in IB device.

Link: https://patch.msgid.link/r/20240822171143.2800-1-mrgolin@amazon.com


Reviewed-by: Yonatan Nachum <ynachum@amazon.com>
Signed-off-by: Yehuda Yitschak <yehuday@amazon.com>
Signed-off-by: Michael Margolin <mrgolin@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>