arm64: dts: qcom: sm6350: Add DPU1 nodes

Add nodes required to enable MDSS/DPU1 on SM6350. There seem to be no
additional changes required to support the derivative SoCs, such as
SM7225.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230315-topic-lagoon_gpu-v2-7-afcdfb18bb13@linaro.org


Signed-off-by: Bjorn Andersson <andersson@kernel.org>