media: dt-bindings: renesas,rzg2l-csi2: Document Renesas RZ/G3E CSI-2 block

Document the CSI-2 block which is part of CRU found in Renesas RZ/G3E
SoC.

The CSI-2 block on the RZ/G3E SoC is identical to one found on the
RZ/V2H(P) SoC.

Acked-by: Rob Herring (Arm) <[e-mail]>
Reviewed-by: Lad Prabhakar <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Tommaso Merciai <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml

···
               - renesas,r9a07g044-csi2 # RZ/G2{L,LC}
               - renesas,r9a07g054-csi2 # RZ/V2L
           - const: renesas,rzg2l-csi2
+      - items:
+          - const: renesas,r9a09g047-csi2 # RZ/G3E
+          - const: renesas,r9a09g057-csi2
       - const: renesas,r9a09g057-csi2 # RZ/V2H(P)
 
   reg: