arm64: dts: qcom: sm6350: Add AOSS_QMP

Add a node for AOSS_QMP in preparation for remote processor enablement.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-10-konrad.dybcio@somainline.org