arm64: dts: qcom: sc8280xp: Add dsi nodes on SC8280XP

arm64: dts: qcom: sc8280xp: Add dsi nodes on SC8280XP

The DT configuration follows other Samsung 5nm-based Qualcomm SOCs,
utilizing the same register layouts and clock structures.

However, DSI won't work properly for now until we submit dispcc fixes.
And some DSC enabled panels require DPU timing calculation fixes too.
(hdisplay / width timing round errors cause the fifo error)

Co-developed-by: Tianyu Gao <gty0622@gmail.com>
Signed-off-by: Tianyu Gao <gty0622@gmail.com>
Signed-off-by: Pengyu Luo <mitltlatltl@gmail.com>
Tested-by: White Lewis <liu224806@gmail.com> # HUAWEI Gaokun3
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260308064835.479356-5-mitltlatltl@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>