arm64: dts: qcom: sm8250: add apr and its services

Add apr node and its associated services required for audio on RB5.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20201202180741.16386-2-srinivas.kandagatla@linaro.org


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