Add support to read device configuration and initialize port-immutables
to report UDP-Encap flag during port query.
Signed-off-by: NDevesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: NSomnath Kotur <somnath.kotur@avagotech.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>