arm64: dts: renesas: Add R8A779G3 SoC support

Add support for the Renesas R-Car V4H ES3.0 (R8A779G3) SoC, which is an
updated version of the R-Car V4H (R8A779G0) SoC.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/978c41f932aa2dccd46ad91fc1ddfabacd1c254c.1733156661.git.geert+renesas@glider.be

arch/arm64/boot/dts/renesas/r8a779g3.dtsi

@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the R-Car V4H (R8A779G3) SoC
+ *
+ * Copyright (C) 2024 Glider bv
+ */
+
+#include "r8a779g0.dtsi"
+
+/ {
+	compatible = "renesas,r8a779g3", "renesas,r8a779g0";
+};