arm64: dts: mediatek: mt7986: add support for Wireless Ethernet Dispatch

Introduce wed0 and wed1 nodes in order to enable offloading forwarding
between ethernet and wireless devices on the mt7986 chipset.
Co-developed-by: NBo Jiao <Bo.Jiao@mediatek.com>
Signed-off-by: NBo Jiao <Bo.Jiao@mediatek.com>
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NPaolo Abeni <pabeni@redhat.com>

arch/arm64/boot/dts/mediatek/mt7986a.dtsi

@@ -222,6 +222,28 @@
 			 #reset-cells = <1>;
 		};
 
+		wed_pcie: wed-pcie@10003000 {
+			compatible = "mediatek,mt7986-wed-pcie",
+				     "syscon";
+			reg = <0 0x10003000 0 0x10>;
+		};
+
+		wed0: wed@15010000 {
+			compatible = "mediatek,mt7986-wed",
+				     "syscon";
+			reg = <0 0x15010000 0 0x1000>;
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
+		wed1: wed@15011000 {
+			compatible = "mediatek,mt7986-wed",
+				     "syscon";
+			reg = <0 0x15011000 0 0x1000>;
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SPI 206 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
 		eth: ethernet@15100000 {
 			compatible = "mediatek,mt7986-eth";
 			reg = <0 0x15100000 0 0x80000>;
@@ -256,6 +278,8 @@
 						 <&apmixedsys CLK_APMIXED_SGMPLL>;
 			mediatek,ethsys = <&ethsys>;
 			mediatek,sgmiisys = <&sgmiisys0>, <&sgmiisys1>;
+			mediatek,wed-pcie = <&wed_pcie>;
+			mediatek,wed = <&wed0>, <&wed1>;
 			#reset-cells = <1>;
 			#address-cells = <1>;
 			#size-cells = <0>;