dt-bindings: mtd: ingenic: Prevent NAND chip unevaluated properties

List all the possible properties in the NAND chip as per the example and
set unevaluatedProperties to false in the NAND chip section.

Cc: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/linux-mtd/20230619092916.3028470-8-miquel.raynal@bootlin.com

Author: miquelraynal

Documentation/devicetree/bindings/mtd/ingenic,nand.yaml

@@ -39,7 +39,9 @@ properties:
 patternProperties:
   "^nand@[a-f0-9]$":
     type: object
+    $ref: raw-nand-chip.yaml
     properties:
+
       rb-gpios:
         description: GPIO specifier for the busy pin.
         maxItems: 1
@@ -48,6 +50,8 @@ patternProperties:
         description: GPIO specifier for the write-protect pin.
         maxItems: 1
 
+    unevaluatedProperties: false
+
 required:
   - compatible
   - reg