Currently, suspend and resume ops are not present, this means that if user
disables a DSA interface that the PHY-s remain alive and the link is up.
Fix it by using generic PHY suspend and resume ops.
Signed-off-by: Serhii Serhieiev <adron@mstnt.com>
Signed-off-by: Robert Marko <robert.marko@sartura.hr>