LoongArch: dts: Add I2S support to Loongson-2K2000

The module is supported, adding it.

Not all Loongson-2K1000 boards have an i2s interface, here is an example
of enabling it:

sound {
	compatible = "loongson,ls-audio-card";
	model = "Loongson-ASoC";
	mclk-fs = <512>;

	cpu {
		sound-dai = <&i2s>;
	};

	codec {
		sound-dai = <&es8323>;
	};
};

&i2c1 {
	status = "okay";
	#address-cells = <1>;
	#size-cells = <0>;

	es8323:es8323@10 {
		compatible = "everest,es8323";
		reg = <0x10>;
		#sound-dai-cells = <0>;
	};
};

&i2s {
	status = "okay";

	clock-frequency = <175000000>;
	#sound-dai-cells = <0>;
};

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

arch/loongarch/boot/dts/loongson-2k2000.dtsi

@@ -173,6 +173,22 @@
 			status = "disabled";
 		};
 
+		i2c@1fe00120 {
+			compatible = "loongson,ls2k-i2c";
+			reg = <0x0 0x1fe00120 0x0 0x8>;
+			interrupt-parent = <&liointc>;
+			interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+
+		i2c@1fe00130 {
+			compatible = "loongson,ls2k-i2c";
+			reg = <0x0 0x1fe00130 0x0 0x8>;
+			interrupt-parent = <&liointc>;
+			interrupts = <9 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+
 		uart0: serial@1fe001e0 {
 			compatible = "ns16550a";
 			reg = <0x0 0x1fe001e0 0x0 0x10>;
@@ -243,9 +259,11 @@
 				status = "disabled";
 			};
 
-			hda@7,0 {
+			i2s@7,0 {
 				reg = <0x3800 0x0 0x0 0x0 0x0>;
-				interrupts = <58 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts = <78 IRQ_TYPE_LEVEL_HIGH>,
+					     <79 IRQ_TYPE_LEVEL_HIGH>;
+				interrupt-names = "tx", "rx";
 				interrupt-parent = <&pic>;
 				status = "disabled";
 			};