net: ethernet: mediatek: add the dts property to set if the HW supports LRO

Add the dts property for the capability if the hardware supports LRO.
Signed-off-by: Nelson Chang <nelson.chang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/mediatek-net.txt

@@ -24,7 +24,7 @@ Required properties:
 Optional properties:
 - interrupt-parent: Should be the phandle for the interrupt controller
   that services interrupts for this device
-
+- mediatek,hwlro: the capability if the hardware supports LRO functions
 
 * Ethernet MAC node
 
@@ -51,6 +51,7 @@ eth: ethernet@1b100000 {
 	reset-names = "eth";
 	mediatek,ethsys = <&ethsys>;
 	mediatek,pctl = <&syscfg_pctl_a>;
+	mediatek,hwlro;
 	#address-cells = <1>;
 	#size-cells = <0>;