ARM: dts: mediatek: Remove pins-are-numbered property

Remove the unnecessary pins-are-numbered property from
Mediatek ARM DeviceTrees

Signed-off-by: Bernhard Rosenkränzer <bero@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20221129023401.278780-7-bero@baylibre.com


Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>