ARM: dts: qcom: Adding msm_sharedmem DT entry

Port of the DT entry which provides configuration settings for the
msm_sharedmem driver. This is needed for correct operation of
MPSS RFS/EFS.

Change-Id: Ic08e19398f10908920f8ac1d7e4670109de5e356
Signed-off-by: Marc Guillaume <quic_mguillau@quicinc.com>

qcom/sun.dtsi

@@ -1083,6 +1083,13 @@
 		};
 	};
 
+	qcom,rmtfs_sharedmem@0 {
+		compatible = "qcom,sharedmem-uio";
+		reg = <0x0 0x400000>;
+		reg-names = "rmtfs";
+		qcom,client-id = <0x00000001>;
+	};
+
 	sdhc_2: sdhci@8804000 {
 		status = "disabled";