arm64: dts: renesas: rzg3s-smarc-som: Add versa3 clock generator node

arm64: dts: renesas: rzg3s-smarc-som: Add versa3 clock generator node

Add versa3 clock generator node. It provides the clocks for the Ethernet
PHY, PCIe, audio devices.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/20241210170953.2936724-22-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>