spi: dt-bindings: qcom,spi-geni-qcom: convert to dtschema

Convert the GENI based Qualcomm Universal Peripheral (QUP) Serial
Peripheral Interface (SPI) bindings to DT Schema.

The original bindings in TXT were not complete, so add during conversion
properties already used in DTS and/or in the driver: dmas,
interconnects, operating points and power-domains.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220404064017.68634-1-krzysztof.kozlowski@linaro.org