dt-bindings: display: bridge: lvds-codec: Fix duplicate key

In order to validate multiple "if" conditionals, they must be part of an
"allOf:" list, otherwise they will cause a failure in parsing the schema
because of the duplicated "if" property.

Fixes: d7df3948eb ("dt-bindings: display: bridge: lvds-codec: Document pixel data sampling edge select")
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211220125147.519880-1-thierry.reding@gmail.com

Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml

@@ -94,31 +94,32 @@ properties:
 
   power-supply: true
 
-if:
-  not:
-    properties:
-      compatible:
-        contains:
-          const: lvds-decoder
-then:
-  properties:
-    ports:
+allOf:
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              const: lvds-decoder
+    then:
       properties:
-        port@0:
+        ports:
           properties:
-            endpoint:
+            port@0:
               properties:
-                data-mapping: false
+                endpoint:
+                  properties:
+                    data-mapping: false
 
-if:
-  not:
-    properties:
-      compatible:
-        contains:
-          const: lvds-encoder
-then:
-  properties:
-    pclk-sample: false
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              const: lvds-encoder
+    then:
+      properties:
+        pclk-sample: false
 
 required:
   - compatible