arm64: dts: qcom: sm6375-pdx225: Configure SMD RPM regulators

Configure regulators present on the Xperia 10 IV that are reachable
via SMD RPM.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221115152727.9736-9-konrad.dybcio@linaro.org