ARM: dts: lan966x: add hwmon node

Add the monitoring node which covers the temperature sensor as well as
the PWM controller and the FAN tacho input.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220502224127.2604333-9-michael@walle.ccSigned-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>

arch/arm/boot/dts/lan966x.dtsi

@@ -444,6 +444,14 @@ sgpio_out: gpio@1 {
 			};
 		};
 
+		hwmon: hwmon@e2010180 {
+			compatible = "microchip,lan9668-hwmon";
+			reg = <0xe2010180 0xc>,
+			      <0xe20042a8 0xc>;
+			reg-names = "pvt", "fan";
+			clocks = <&sys_clk>;
+		};
+
 		gic: interrupt-controller@e8c11000 {
 			compatible = "arm,gic-400", "arm,cortex-a7-gic";
 			#interrupt-cells = <3>;