dt-bindings: eeprom: at24: Add compatible for ONSemi N24S64B

The ONSemi N24S64B is a 64 KBit serial EEPROM that is compatible
with atmel,24c64.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240702103155.321855-3-frieder@fris.de
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Author: fschrempf

Documentation/devicetree/bindings/eeprom/at24.yaml

@@ -128,6 +128,9 @@ properties:
       - items:
           - const: giantec,gt24c32a
           - const: atmel,24c32
+      - items:
+          - const: onnn,n24s64b
+          - const: atmel,24c64
       - items:
           - enum:
               - renesas,r1ex24128