arm64: dts: qcom: sc8180x: Add display and gpu nodes

This patch adds gpu, gmu, gpucc, dispcc and finally the mdss node with
dsi0/1, dp0/1 and edp subnodes as found in this SoC
Co-developed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230530162454.51708-13-vkoul@kernel.org