From: Matthias Brugger <matthias.bgg@xxxxxxxxx>
The function svs_add_device_link is called only internally from the SoC
specific probe functions. We don't need to check if the node_name is
null because that would mean that we have a buggy SoC probe function in
the first place.
Signed-off-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>