dt-bindings: soc: renesas: Document RZ/G3L SoC variants, SMARC SoM and Carrier-II EVK

dt-bindings: soc: renesas: Document RZ/G3L SoC variants, SMARC SoM and Carrier-II EVK

Document Renesas RZ/G3L (R9A08G046) SoC variants and the Renesas RZ/G3L
SMARC Carrier-II EVK board which is based on the Renesas RZ/G3L SMARC SoM.
The RZ/G3L SMARC Carrier-II EVK consists of an RZ/G3L SoM module and a
SMARC Carrier-II carrier board.  The SoM module sits on top of the carrier
board.

Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260203103031.247435-3-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>