dt-bindings: nvmem: rockchip,otp: add missing limits for clock-names

The clocks property correctly declares minItems and maxItems for its
variants, but clock-names does not. Both properties are always used
together, so should declare the same limits.

Suggested-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Heiko Stuebner <[e-mail]>
Acked-by: Conor Dooley <[e-mail]>
Tested-by: Nicolas Frattaroli <[e-mail]>
Signed-off-by: Srinivas Kandagatla <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

Documentation/devicetree/bindings/nvmem/rockchip,otp.yaml

···
       properties:
         clocks:
           maxItems: 3
+        clock-names:
+          maxItems: 3
         resets:
           maxItems: 1
         reset-names:
···
     then:
       properties:
         clocks:
+          minItems: 4
+        clock-names:
           minItems: 4
         resets:
           minItems: 3