mmc: dw_mmc: add support for hi3798mv200

Add support for Hi3798MV200 specific extension.

Signed-off-by: Yang Xiwen <forbidden405@outlook.com>
Link: https://lore.kernel.org/r/20240229-b4-mmc-hi3798mv200-v7-5-10c03f316285@outlook.com


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