dt-bindings: mmc: sdhci-msm: Document the SM6375 compatible

Document the compatible for SDHCI on SM6375.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20221114105043.36698-2-konrad.dybcio@linaro.org


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