ARM: dts: aspeed: bletchley: Add shunt-resistor for ADM1278

Fix with correct shunt-resistor value base on EVT HW.
Signed-off-by: NPotin Lai <potin.lai@quantatw.com>
Reviewed-by: NJoel Stanley <joel@jms.id.au>
Reviewed-by: NPatrick Williams <patrick@stwcx.xyz>
Link: https://lore.kernel.org/r/20220215163151.32252-8-potin.lai@quantatw.comSigned-off-by: NJoel Stanley <joel@jms.id.au>

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

@@ -714,6 +714,7 @@
 	adm1278@11 {
 		compatible = "adi,adm1278";
 		reg = <0x11>;
+		shunt-resistor-micro-ohms = <300>;
 	};
 
 	tmp421@4c {