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>

arch/arm/boot/dts/qcom-sdx55.dtsi

@@ -379,6 +379,21 @@
 			#interrupt-cells = <2>;
 		};
 
+		imem@1468f000 {
+			compatible = "simple-mfd";
+			reg = <0x1468f000 0x1000>;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			ranges = <0x0 0x1468f000 0x1000>;
+
+			pil-reloc@94c {
+				compatible = "qcom,pil-reloc-info";
+				reg = <0x94c 0x200>;
+			};
+		};
+
 		apps_smmu: iommu@15000000 {
 			compatible = "qcom,sdx55-smmu-500", "arm,mmu-500";
 			reg = <0x15000000 0x20000>;