Some PHYs can be linked with PSE (Power Sourcing Equipment), so search
for related nodes and attach it to the phydev.
Signed-off-by: NOleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>