arm64: dts: renesas: r9a09g047: Add ICU node

arm64: dts: renesas: r9a09g047: Add ICU node

Add interrupt control node to RZ/G3E ("R9A09G047") SoC DTSI
and add icu as interrupt-parent of pincontrol.

Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Reviewed-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20250207113653.21641-13-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>