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>