ARM: dts: qcom: sdx55: Add IMEM and PIL info region

Add a simple-mfd representing IMEM on SDX55 and define the PIL
relocation info region, so that post mortem tools will be able to locate
the loaded remoteproc.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210408170457.91409-6-manivannan.sadhasivam@linaro.org


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