arm64: dts: mediatek: mt7981: add watchdog & WiFi controllers

MT7981 (Filogic 820) is a low cost version of MT7986 (Filogic 830) with
the same watchdog controller. It also comes with on-SoC 802.11ax
wireless.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240221085547.27840-1-zajec5@gmail.comSigned-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

arch/arm64/boot/dts/mediatek/mt7981b.dtsi

@@ -2,6 +2,7 @@
 
 #include <dt-bindings/clock/mediatek,mt7981-clk.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/reset/mt7986-resets.h>
 
 / {
 	compatible = "mediatek,mt7981b";
@@ -62,12 +63,19 @@ infracfg: clock-controller@10001000 {
 			#clock-cells = <1>;
 		};
 
-		clock-controller@1001b000 {
+		topckgen: clock-controller@1001b000 {
 			compatible = "mediatek,mt7981-topckgen", "syscon";
 			reg = <0 0x1001b000 0 0x1000>;
 			#clock-cells = <1>;
 		};
 
+		watchdog: watchdog@1001c000 {
+			compatible = "mediatek,mt7986-wdt";
+			reg = <0 0x1001c000 0 0x1000>;
+			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+			#reset-cells = <1>;
+		};
+
 		clock-controller@1001e000 {
 			compatible = "mediatek,mt7981-apmixedsys";
 			reg = <0 0x1001e000 0 0x1000>;
@@ -114,6 +122,22 @@ clock-controller@15000000 {
 			#clock-cells = <1>;
 			#reset-cells = <1>;
 		};
+
+		wifi@18000000 {
+			compatible = "mediatek,mt7981-wmac";
+			reg = <0 0x18000000 0 0x1000000>,
+			      <0 0x10003000 0 0x1000>,
+			      <0 0x11d10000 0 0x1000>;
+			interrupts = <GIC_SPI 213 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 214 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 216 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&topckgen CLK_TOP_NETSYS_MCU_SEL>,
+				 <&topckgen CLK_TOP_AP2CNN_HOST_SEL>;
+			clock-names = "mcu", "ap2conn";
+			resets = <&watchdog MT7986_TOPRGU_CONSYS_SW_RST>;
+			reset-names = "consys";
+		};
 	};
 
 	timer {