[PATCH] dt-bindings: xlnx,vcu-settings: fix dt_binding_check warnings

[Michael Tretter <m.tretter@pengutronix.de>]

When running make dt_binding_check, the xlnx,vcu-settings binding
triggers the following two warnings:

	'additionalProperties' is a required property

	example-0: vcu@a0041000:reg:0: [0, 2684620800, 0, 4096] is too long

Fix the binding and make the checker happy.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
---

Hi,

The xlnx,vcu-settings binding was reviewed [0] before the bot started to
run automated tests on the device tree bindings, but now produces some
warnings. The original patch that introduces the binding is still in
Michal's tree and I am not entirely sure how to handle it, but here is a
patch.

Michael

[0] https://lore.kernel.org/linux-arm-kernel/20200429213659.GA9051@bogus/
---
 .../bindings/soc/xilinx/xlnx,vcu-settings.yaml    | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/soc/xilinx/xlnx,vcu-settings.yaml b/Documentation/devicetree/bindings/soc/xilinx/xlnx,vcu-settings.yaml
index 378d0ced43c8..cb245f400287 100644
--- a/Documentation/devicetree/bindings/soc/xilinx/xlnx,vcu-settings.yaml
+++ b/Documentation/devicetree/bindings/soc/xilinx/xlnx,vcu-settings.yaml
@@ -26,9 +26,18 @@ required:
   - compatible
   - reg
 
+additionalProperties: false
+
 examples:
   - |
-    xlnx_vcu: vcu@a0041000 {
-          compatible = "xlnx,vcu-settings", "syscon";
-          reg = <0x0 0xa0041000 0x0 0x1000>;
+    fpga {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        xlnx_vcu: vcu@a0041000 {
+            compatible = "xlnx,vcu-settings", "syscon";
+            reg = <0x0 0xa0041000 0x0 0x1000>;
+        };
     };
+
+...
-- 
2.20.1