arm64: dts: qcom: sc8180x: Introduce Primus

Introduce support for the SC8180X reference device, aka Primus, with
debug UART, regulators, UFS and USB support.

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/20230530162454.51708-15-vkoul@kernel.org