arm64: dts: renesas: r9a09g011: Add system controller node

Add system controller node to RZ/V2M SoC dtsi.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20221116102140.852889-4-biju.das.jz@bp.renesas.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>