Currently am33xx.dtsi declares the MAC controller to have two slave ports, on these boards we only use one, so set the slave count to one. This eliminates a console error message when the non-existent PHY is not detected. Signed-off-by: Andrew F. Davis <afd@ti.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>