arm64: dts: qcom: sdm845: Define rmtfs memory

Define the rmtfs memory node. As the memory region specified in version
10 of the memory map is only 1MB a chunk of unallocated memory is
chosen.
Tested-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <agross@kernel.org>

arch/arm64/boot/dts/qcom/sdm845.dtsi

@@ -106,6 +106,15 @@ tz_mem: memory@86200000 {
 			no-map;
 		};
 
+		rmtfs_mem: memory@88f00000 {
+			compatible = "qcom,rmtfs-mem";
+			reg = <0 0x88f00000 0 0x200000>;
+			no-map;
+
+			qcom,client-id = <1>;
+			qcom,vmid = <15>;
+		};
+
 		qseecom_mem: memory@8ab00000 {
 			reg = <0 0x8ab00000 0 0x1400000>;
 			no-map;