dt-bindings: mmc: sdhci-of-dwcmhsc: Add Sophgo CV1800B and SG2002 support

Add compatible value for the dwcmshc controller in Sophgo's CV1800B and
SG2002.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240217144202.3808-2-jszhang@kernel.org


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