regulator: qcom,spmi-regulator: Convert to dtschema

Convert the bindings of Qualcomm SPMI regulators to DT schema.

Signed-off-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220704212402.1715182-3-robimarko@gmail.com


Signed-off-by: Mark Brown <broonie@kernel.org>