dt-bindings: display: arm,malidp: remove bogus RQOS property

As Liviu pointed out, the arm,malidp-arqos-high-level property
mentioned in the original .txt binding was a mistake, and
arm,malidp-arqos-value needs to take its place.

The binding commit ce6eb0253c ("dt/bindings: display: Add optional
property node define for Mali DP500") mentions the right name in the
commit message, but has the wrong name in the diff.
Commit d298e6a27a ("drm/arm/mali-dp: Add display QoS interface
configuration for Mali DP500") uses the property in the driver, but uses
the shorter name.

Remove the wrong property from the binding, and use the proper name in
the example. The actual property was already documented properly.

Fixes: 2c8b082a3a ("dt-bindings: display: convert Arm Mali-DP to DT schema")
Link: https://lore.kernel.org/linux-arm-kernel/YnumGEilUblhBx8E@e110455-lin.cambridge.arm.com/
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reported-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220609162729.1441760-1-andre.przywara@arm.com

Documentation/devicetree/bindings/display/arm,malidp.yaml

@@ -71,11 +71,6 @@ properties:
       - description: number of output lines for the green channel (G)
       - description: number of output lines for the blue channel (B)
 
-  arm,malidp-arqos-high-level:
-    $ref: /schemas/types.yaml#/definitions/uint32
-    description:
-      integer describing the ARQoS levels of DP500's QoS signaling
-
   arm,malidp-arqos-value:
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
@@ -113,7 +108,7 @@ examples:
         clocks = <&oscclk2>, <&fpgaosc0>, <&fpgaosc1>, <&fpgaosc1>;
         clock-names = "pxlclk", "mclk", "aclk", "pclk";
         arm,malidp-output-port-lines = /bits/ 8 <8 8 8>;
-        arm,malidp-arqos-high-level = <0xd000d000>;
+        arm,malidp-arqos-value = <0xd000d000>;
 
         port {
             dp0_output: endpoint {