ARM: dts: aspeed: Harma: Add ltc4286 device

Add ltc4286 device.
Signed-off-by: Peter Yin <peteryin.openbmc@gmail.com>
Link: https://lore.kernel.org/r/20240412091600.2534693-10-peteryin.openbmc@gmail.comSigned-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>

arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts

@@ -271,6 +271,13 @@ temperature-sensor@49 {
 		compatible = "ti,tmp75";
 		reg = <0x49>;
 	};
+
+	power-monitor@22 {
+		compatible = "lltc,ltc4286";
+		reg = <0x22>;
+		adi,vrange-low-enable;
+		shunt-resistor-micro-ohms = <500>;
+	};
 };
 
 &i2c5 {