arm64: dts: qcom: sm6375: Add SMP2P for ADSP&CDSP

Add nodes for ADSP&CDSP SMP2P.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221114105913.37044-2-konrad.dybcio@linaro.org