dt-bindings: display: dsi-controller: move clock-master property

The clock-master property is used for the controller and not in the panel,
so move it there.
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1c3b18ad-350f-e862-de98-a775e11e132c@gmail.com

Documentation/devicetree/bindings/display/dsi-controller.yaml

@@ -30,6 +30,15 @@ properties:
   $nodename:
     pattern: "^dsi(@.*)?$"
 
+  clock-master:
+    type: boolean
+    description:
+      Should be enabled if the host is being used in conjunction with
+      another DSI host to drive the same peripheral. Hardware supporting
+      such a configuration generally requires the data on both the busses
+      to be driven by the same clock. Only the DSI host instance
+      controlling this clock should contain this property.
+
   "#address-cells":
     const: 1
 
@@ -52,15 +61,6 @@ patternProperties:
           case the reg property can take multiple entries, one for each virtual
           channel that the peripheral responds to.
 
-      clock-master:
-        type: boolean
-        description:
-          Should be enabled if the host is being used in conjunction with
-          another DSI host to drive the same peripheral. Hardware supporting
-          such a configuration generally requires the data on both the busses
-          to be driven by the same clock. Only the DSI host instance
-          controlling this clock should contain this property.
-
       enforce-video-mode:
         type: boolean
         description: