arm64: dts: renesas: Add R-Car Salvator-x M3-N support

Add basic support for R-Car Salvator-X M3-N (R8A77965) board.

Based on original work from:
Takeshi Kihara <takeshi.kihara.df@renesas.com>
Magnus Damm <damm+renesas@opensource.se>

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/Makefile

@@ -7,6 +7,7 @@ dtb-$(CONFIG_ARCH_R8A7795) += r8a7795-es1-h3ulcb-kf.dtb
 dtb-$(CONFIG_ARCH_R8A7796) += r8a7796-salvator-x.dtb r8a7796-m3ulcb.dtb
 dtb-$(CONFIG_ARCH_R8A7796) += r8a7796-m3ulcb-kf.dtb
 dtb-$(CONFIG_ARCH_R8A7796) += r8a7796-salvator-xs.dtb
+dtb-$(CONFIG_ARCH_R8A77965) += r8a77965-salvator-x.dtb
 dtb-$(CONFIG_ARCH_R8A77970) += r8a77970-eagle.dtb r8a77970-v3msk.dtb
 dtb-$(CONFIG_ARCH_R8A77980) += r8a77980-condor.dtb
 dtb-$(CONFIG_ARCH_R8A77995) += r8a77995-draak.dtb

arch/arm64/boot/dts/renesas/r8a77965-salvator-x.dts

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the Salvator-X board with R-Car M3-N
+ *
+ * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
+ */
+
+/dts-v1/;
+#include "r8a77965.dtsi"
+#include "salvator-x.dtsi"
+
+/ {
+	model = "Renesas Salvator-X board based on r8a77965";
+	compatible = "renesas,salvator-x", "renesas,r8a77965";
+
+	memory@48000000 {
+		device_type = "memory";
+		/* first 128MB is reserved for secure area. */
+		reg = <0x0 0x48000000 0x0 0x78000000>;
+	};
+};