dt-bindings: mmc: fujitsu: Add Socionext Synquacer

Add support for Socionext Synquacer SDHCI. This binding has been in use for
some time.

The interrupts were not documented. The driver only uses the first
interrupt, but the DT and example have 2 interrupts. The 2nd one is
unknown. "dma-coherent" was also not documented, but is used on Synquacer.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20230319173006.30455-1-robh@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

dt-bindings: sdhci-fujitsu: Add compatible string for F_SDH30_E51

Add a compatible string for F_SDH30_E51 IP to the documentation.
Since this IP is transferred to Socionext, so append it as vendor name.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221111081033.3813-4-hayashi.kunihiko@socionext.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

dt-bindings: mmc: Convert sdhci-fujitsu to JSON schema

Convert the Fujitsu SDHCI controller IP binding to DT schema format,
and add resets property as optional to support reset control.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221111081033.3813-2-hayashi.kunihiko@socionext.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>