ARM: dts: aspeed: minerva: Modify mac3 setting

Remove the unuse setting and fix the link to 100 M
Signed-off-by: Yang Chen <yangchen.openbmc@gmail.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20231212075200.983536-3-yangchen.openbmc@gmail.comSigned-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>

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

@@ -48,10 +48,13 @@ &wdt1 {
 
 &mac3 {
 	status = "okay";
+	phy-mode = "rmii";
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_rmii4_default>;
-	use-ncsi;
-	mlx,multi-host;
+	fixed-link {
+		speed = <100>;
+		full-duplex;
+	};
 };
 
 &fmc {