arm64: dts: qcom: sm8250: move DSI opp table to the dsi0 node

It makes no sense to have the OPP table for the DSI controllers in the
DSI1 PHY node. Move it to more logical dsi0 device node.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Caleb Connolly <caleb@connolly.tech>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220822191138.316912-1-dmitry.baryshkov@linaro.org