arm64: dts: qcom: sm7225-fairphone-fp4: Enable ADSP, CDSP & MPSS

Enable the remoteprocs found on the SoC and add a qcom,rmtfs-mem node.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211213082208.21492-9-luca.weiss@fairphone.com