arm64: dts: qcom: sdm630: Add ADSP remoteproc configuration

Configure the ADSP remote processor and add a simple sound{}
node to make way for future development.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210728222542.54269-18-konrad.dybcio@somainline.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>