media: dt-bindings: media: renesas,vsp1: Document RZ/G3L VSPD

media: dt-bindings: media: renesas,vsp1: Document RZ/G3L VSPD

The VSPD block on the RZ/G3L SoC is identical to the one found on the
RZ/G2L SoC. Document RZ/G3L VSPD.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Link: https://patch.msgid.link/20260330105637.130189-1-biju.das.jz@bp.renesas.com
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>