ARM: dts: msm8974: Split efs in rfsa and rmtfs

One part of the efs memory region is used specifically for sharing file system
buffers between the apps and modem cpus (aka rmtfs), so better reflect this
split.
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>

arch/arm/boot/dts/qcom-msm8974.dtsi

@@ -49,8 +49,13 @@
 			no-map;
 		};
 
-		efs@0fd600000 {
-			reg = <0x0fd60000 0x1a0000>;
+		rfsa@0fd60000 {
+			reg = <0x0fd60000 0x20000>;
+			no-map;
+		};
+
+		rmtfs@0fd80000 {
+			reg = <0x0fd80000 0x180000>;
 			no-map;
 		};