arm64: dts: rockchip: Fix the mac compatible for rk3308

Change-Id: I4a58d831fea81bf5874603159a13e286baae3cda
Signed-off-by: David Wu <[email protected]>

Author: SuperDavidWu

arch/arm64/boot/dts/rockchip/rk3308.dtsi

@@ -835,7 +835,7 @@
 	};
 
 	mac: ethernet@ff4e0000 {
-		compatible = "rockchip,px3308-mac";
+		compatible = "rockchip,rk3308-mac";
 		reg = <0x0 0xff4e0000 0x0 0x10000>;
 		rockchip,grf = <&grf>;
 		interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;