mips: dts: econet: fix EN751221 core type

In fact, it is a multi-threaded MIPS34Kc, not a single-threaded MIPS24Kc.

Fixes: 0ec488700972 ("mips: dts: Add EcoNet DTS with EN751221 and SmartFiber XP8421-B board")
Signed-off-by: Aleksander Jan Bajkowski <[e-mail]>
Signed-off-by: Thomas Bogendoerfer <[e-mail]>

arch/mips/boot/dts/econet/en751221.dtsi

···
 
 		cpu@0 {
 			device_type = "cpu";
-			compatible = "mips,mips24KEc";
+			compatible = "mips,mips34Kc";
 			reg = <0>;
 		};
 	};