arm64: dts: renesas: rzg2lc-smarc-som: Enable watchdog

Enable watchdog{0, 1, 2} interfaces on RZ/G2LC SMARC EVK.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20220223165813.24833-1-biju.das.jz@bp.renesas.com


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