dt-bindings: mtd: fixed-partitions: Fix 'sercomm,scpart-id' schema

The schema for 'sercomm,scpart-id' is broken. The 'if' condition is
never true because 'compatible' is in the parent node, not the child
node the sub-schema applies to. The example passes as there are no
constraints on additional/unevaluated properties. That's a secondary
issue which is complicated due to nested partitions.

Drop the if/then schema and the unnecessary 'allOf' so that the
'sercomm,scpart-id' property is at least defined.

Cc: Mikhail Zhilkin <csharper2005@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221111212824.4103514-1-robh@kernel.org

Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml

@@ -31,23 +31,16 @@ properties:
 
 patternProperties:
   "@[0-9a-f]+$":
-    allOf:
-      - $ref: "partition.yaml#"
-      - if:
-          properties:
-            compatible:
-              contains:
-                const: sercomm,sc-partitions
-        then:
+    $ref: partition.yaml#
+
     properties:
       sercomm,scpart-id:
-              description: Partition id in Sercomm partition map. Mtd
-                parser uses this id to find a record in the partition map
-                containing offset and size of the current partition. The
-                values from partition map overrides partition offset and
-                size defined in reg property of the dts. Frequently these
-                values are the same, but may differ if device has bad
-                eraseblocks on a flash.
+        description: Partition id in Sercomm partition map. Mtd parser
+          uses this id to find a record in the partition map containing
+          offset and size of the current partition. The values from
+          partition map overrides partition offset and size defined in
+          reg property of the dts. Frequently these values are the same,
+          but may differ if device has bad eraseblocks on a flash.
         $ref: /schemas/types.yaml#/definitions/uint32
 
 required: