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