arm64: dts: renesas: r9a07g043: Introduce SOC_PERIPHERAL_IRQ() macro to specify interrupt property

Introduce SOC_PERIPHERAL_IRQ() macro to specify interrupt property so
that we can share the common parts of the SoC DTSI with the RZ/Five
(RISC-V) SoC and the RZ/G2UL (ARM64) SoC.

This patch adds a new file r9a07g043u.dtsi to separate out RZ/G2UL
(ARM64) SoC specific parts.  No functional changes (same DTB).
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20221025220629.79321-2-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r9a07g043u.dtsi

+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G2UL SoC
+ *
+ * Copyright (C) 2022 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+#define SOC_PERIPHERAL_IRQ(nr)		GIC_SPI nr
+
+#include "r9a07g043.dtsi"

arch/arm64/boot/dts/renesas/r9a07g043u11-smarc.dts

@@ -17,7 +17,7 @@
 #define SW_SW0_DEV_SEL	1
 #define SW_ET0_EN_N	1
 
-#include "r9a07g043.dtsi"
+#include "r9a07g043u.dtsi"
 #include "rzg2ul-smarc-som.dtsi"
 #include "rzg2ul-smarc.dtsi"