dt-bindings: mmc: mtk-sd: drop assigned-clocks/clock-parents

MT7986 has 2 clock-parents and these properties are not needed in driver
binding. So drop them completely.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230629184318.551317-2-linux@fw-web.de


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>