dt-bindings: PCI: pci-ep: Add binding to specify virtual function

Add binding to specify virtual function (associated with each physical
function) in endpoint mode.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Kishon Vijay Abraham I <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Reviewed-by: Rob Herring <[email protected]>

Author: kishon

Documentation/devicetree/bindings/pci/pci-ep.yaml

@@ -23,6 +23,13 @@ properties:
     default: 1
     maximum: 255
 
+  max-virtual-functions:
+    description: Array representing the number of virtual functions corresponding to each physical
+      function
+    $ref: /schemas/types.yaml#/definitions/uint8-array
+    minItems: 1
+    maxItems: 255
+
   max-link-speed:
     $ref: /schemas/types.yaml#/definitions/uint32
     enum: [ 1, 2, 3, 4 ]