dt-bindings: mfd: qcom,tcsr: Convert to dtschema

Convert the Qualcomm Top Control and Status Register to DT Schema.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220607133443.182468-1-krzysztof.kozlowski@linaro.org