dt-bindings: mtd: partitions: Allow "nvmem-layout" in generic partition nodes

An "nvmem-layout" node can be used in any partition node, so add it.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Author: robherring

Documentation/devicetree/bindings/mtd/partitions/partition.yaml

@@ -135,6 +135,9 @@ properties:
       but may differ if device has bad eraseblocks on a flash.
     $ref: /schemas/types.yaml#/definitions/uint32
 
+  nvmem-layout:
+    $ref: /schemas/nvmem/layouts/nvmem-layout.yaml
+
 if:
   not:
     required: [ reg ]