arm64: dts: qcom: sm8450-hdk: Enable remoteproc instances

Enable the audio, compute, sensor and modem remoteproc and specify
firmware path for these on the Qualcomm SM8450 HDK.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220410205901.1672089-2-dmitry.baryshkov@linaro.org