dt-bindings: arm: renesas: Document Renesas RZ/V2M SoC and EVK board

Details of the SoC can be found here:
https://www.renesas.com/us/en/products/microcontrollers-microprocessors/rz-cortex-a-mpus/rzv2m-dual-cortex-a53-lpddr4x32bit-ai-accelerator-isp-4k-video-codec-4k-camera-input-fhd-display-output

The RZ/V2M Evaluation Kit (V2MEVK) consists of the RZ/V2M Main Board,
RZ/V2M Base Board, and CIS IMX415 Board (CIS).

Signed-off-by: Phil Edworthy <[e-mail]>
Reviewed-by: Biju Das <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Geert Uytterhoeven <[e-mail]>

Documentation/devicetree/bindings/arm/renesas.yaml

···
               - renesas,r9a07g054l2 # Dual Cortex-A55 RZ/V2L
           - const: renesas,r9a07g054
 
+      - description: RZ/V2M (R9A09G011)
+        items:
+          - enum:
+              - renesas,rzv2mevk2   # RZ/V2M Eval Board v2.0
+          - const: renesas,r9a09g011
+
 additionalProperties: true
 
 ...