dt-bindings: net: bluetooth: qualcomm: document WCN7850 chipset

Document the WCN7850 Bluetooth chipset.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

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

@@ -26,6 +26,7 @@ properties:
       - qcom,qca6390-bt
       - qcom,wcn6750-bt
       - qcom,wcn6855-bt
+      - qcom,wcn7850-bt
 
   enable-gpios:
     maxItems: 1
@@ -58,6 +59,9 @@ properties:
   vddaon-supply:
     description: VDD_AON supply regulator handle
 
+  vdddig-supply:
+    description: VDD_DIG supply regulator handle
+
   vddbtcxmx-supply:
     description: VDD_BT_CXMX supply regulator handle
 
@@ -73,6 +77,9 @@ properties:
   vddrfa1p2-supply:
     description: VDD_RFA_1P2 supply regulator handle
 
+  vddrfa1p9-supply:
+    description: VDD_RFA_1P9 supply regulator handle
+
   vddrfa2p2-supply:
     description: VDD_RFA_2P2 supply regulator handle
 
@@ -157,6 +164,22 @@ allOf:
         - vddrfa0p8-supply
         - vddrfa1p2-supply
         - vddrfa1p7-supply
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,wcn7850-bt
+    then:
+      required:
+        - enable-gpios
+        - swctrl-gpios
+        - vddio-supply
+        - vddaon-supply
+        - vdddig-supply
+        - vddrfa0p8-supply
+        - vddrfa1p2-supply
+        - vddrfa1p9-supply
 
 examples:
   - |