riscv: dts: renesas: rzfive-smarc-som: Enable WDT

Enable WDT node on RZ/Five SMARC SoM.

Note, WDT block is enabled in RZ/G2UL SMARC SoM DTSI [0] hence deleting
the disabled node from RZ/Five SMARC SoM DTSI enables it here too as we
include [0] in RZ/Five SMARC SoM DTSI.

[0] arch/arm64/boot/dts/renesas/rzg2ul-smarc-som.dtsi

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20221118135715.14410-1-prabhakar.mahadev-lad.rj@bp.renesas.com


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