dt-bindings: doc: add new properties for of_get_mac_address from nvmem

Currently, of_get_mac_address supports NVMEM, some platforms
MAC address that read from NVMEM efuse requires to swap bytes
order, so add new property "nvmem_macaddr_swap" to specify the
behavior. If the MAC address is valid from NVMEM, add new property
"nvmem-mac-address" in ethernet node.

Update these two properties in the binding documentation.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
[ Aisheng: update to yaml format ]
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>

Documentation/devicetree/bindings/net/ethernet-controller.yaml

@@ -34,6 +34,15 @@ properties:
       to the device by the boot program is different from the
       local-mac-address property.
 
+  nvmem-mac-address:
+    allOf:
+      - $ref: /schemas/types.yaml#definitions/uint8-array
+      - minItems: 6
+        maxItems: 6
+    description:
+      Specifies the MAC address that was read from nvmem-cells and dynamically
+      add the property in device node;
+
   max-frame-size:
     $ref: /schemas/types.yaml#definitions/uint32
     description:
@@ -54,6 +63,11 @@ properties:
   nvmem-cells-names:
     const: mac-address
 
+  nvmem_macaddr_swap:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      swap bytes order for the 6 bytes of MAC address
+
   phy-connection-type:
     description:
       Operation mode of the PHY interface