dt-bindings: net: Add WCN6855 Bluetooth

Add bindings for the QTI WCN6855 chipset.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Steev Klimaszewski <steev@kali.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml

@@ -23,6 +23,7 @@ properties:
       - qcom,wcn3998-bt
       - qcom,qca6390-bt
       - qcom,wcn6750-bt
+      - qcom,wcn6855-bt
 
   enable-gpios:
     maxItems: 1
@@ -133,6 +134,22 @@ allOf:
         - vddrfa1p7-supply
         - vddrfa1p2-supply
         - vddasd-supply
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,wcn6855-bt
+    then:
+      required:
+        - enable-gpios
+        - swctrl-gpios
+        - vddio-supply
+        - vddbtcxmx-supply
+        - vddrfacmn-supply
+        - vddrfa0p8-supply
+        - vddrfa1p2-supply
+        - vddrfa1p7-supply
 
 examples:
   - |