dt-bindings: i2c: renesas,riic: Document the R9A09G047 support

Document support for the I2C Bus Interface (RIIC) found in the Renesas
RZ/G3E (R9A09G047) SoC. This IP is compatible with Renesas RZ/V2H
(R9A09G057) RIIC IP.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20241216202436.185773-1-biju.das.jz@bp.renesas.com
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>

Documentation/devicetree/bindings/i2c/renesas,riic.yaml

@@ -26,7 +26,9 @@ properties:
           - const: renesas,riic-rz      # RZ/A or RZ/G2L
 
       - items:
-          - const: renesas,riic-r9a08g045   # RZ/G3S
+          - enum:
+              - renesas,riic-r9a08g045   # RZ/G3S
+              - renesas,riic-r9a09g047   # RZ/G3E
           - const: renesas,riic-r9a09g057   # RZ/V2H(P)
 
       - const: renesas,riic-r9a09g057   # RZ/V2H(P)
@@ -89,6 +91,7 @@ if:
           - renesas,riic-r9a07g043
           - renesas,riic-r9a07g044
           - renesas,riic-r9a07g054
+          - renesas,riic-r9a09g057
 then:
   required:
     - resets