Document RZ/Five (R9A07G043F) IRQC bindings. The IRQC block on the RZ/Five
SoC is almost identical to the one found on the RZ/G2L SoC, with the only
difference being that it has additional mask control registers for
NMI/IRQ/TINT.

Hence new compatible string "renesas,r9a07g043f-irqc" is added for RZ/Five
SoC.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240604173710.534132-2-prabhakar.mahadev-lad.rj@bp.renesas.com