The RZ/A2M EVB sub board has 2 Ethernet jacks on it.

Set switch SW6_4	to ON to use Ethernet Ch-0
Set switch SW6_5	to ON to use Ethernet Ch-1
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>