dt-bindings: soc: renesas: renesas,rzg2l-sysc: Document RZ/G3L SoC

Document RZ/G3L (R9A08G046) SYSC bindings.  The SYSC block found on the
RZ/G3L SoC is similar to the one found on RZ/G3S.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260203103031.247435-4-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Author: bijudas

Documentation/devicetree/bindings/soc/renesas/renesas,rzg2l-sysc.yaml

@@ -24,6 +24,7 @@ properties:
       - renesas,r9a07g044-sysc # RZ/G2{L,LC}
       - renesas,r9a07g054-sysc # RZ/V2L
       - renesas,r9a08g045-sysc # RZ/G3S
+      - renesas,r9a08g046-sysc # RZ/G3L
 
   reg:
     maxItems: 1