mmc: sdhci-of-dwcmshc: Add support for Sophgo CV1800B and SG2002

Add support for the mmc controller in the Sophgo CV1800B and SG2002
with corresponding new compatible strings. Implement custom sdhci_ops.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://lore.kernel.org/r/20240217144202.3808-3-jszhang@kernel.org


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