dt-bindings: dp83867: Fix the type of device

DP83867 is an Ethernet PHY, not a charger, so fix the documentation
accordingly.

Fixes: 74ac28f1 ("dt-bindings: dp83867: Convert DP83867 to yaml")
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/ti,dp83867.yaml

@@ -24,7 +24,7 @@ description: |
   IEEE 802.3 Standard Media Independent Interface (MII), the IEEE 802.3 Gigabit
   Media Independent Interface (GMII) or Reduced GMII (RGMII).
 
-  Specifications about the charger can be found at:
+  Specifications about the Ethernet PHY can be found at:
     https://www.ti.com/lit/gpn/dp83867ir
 
 properties: