arm64: dts: mediatek: mt8365-evk: Set ethernet alias

arm64: dts: mediatek: mt8365-evk: Set ethernet alias

Configure an the ethernet alias to match the ethernet controller (even
if it's off by default). This allows e.g. u-boot to configure the mac
address on boot properly

Signed-off-by: Sjoerd Simons <sjoerd@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250106085737.227622-1-sjoerd@collabora.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>