dt-bindings: display: arm,versatile-tft-panel: Drop erroneous properties in example

The 'arm,versatile-sysreg' node in the example should not have
'#address-cells' and '#size-cells' properties as the child node doesn't
have 'reg'.

Signed-off-by: Rob Herring <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/display/panel/arm,versatile-tft-panel.yaml

···
         compatible = "arm,versatile-sysreg", "syscon", "simple-mfd";
         reg = <0x00000 0x1000>;
 
-        #address-cells = <1>;
-        #size-cells = <0>;
-
         panel {
             compatible = "arm,versatile-tft-panel";