dt-bindings: ufs: cdns,ufshc: add missing dma-coherent field

Add missing dma-coherent property to schema which avoids the following warnings

ufs-wrapper@4e80000: ufs@4e84000: Unevaluated properties are not allowed ('dma-coherent' was unexpected)

Signed-off-by: Matt Ranostay <mranostay@ti.com>
Link: https://lore.kernel.org/r/20221013194559.128643-1-mranostay@ti.com
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: ufs: cdns,ufshc: Add power-domains

The Cadence UFS controller can be part of power domain (as it is in
example DTS of TI J721e UFS Host Controller Glue), so allow such
property.

Reported-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220427065802.110402-1-krzysztof.kozlowski@linaro.org

dt-bindings: ufs: cdns,ufshc: convert to dtschema

Convert the Cadence Universal Flash Storage (UFS) Controlle to DT schema
format.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220306111125.116455-4-krzysztof.kozlowski@canonical.com