arm64: dts: qcom: sm8150: Add base dts file

This add base DTS file with cpu, psci, firmware, clock node tlmm and
spmi and enables boot to console

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Niklas Cassel <niklas.cassel@linaro.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>