FROMLIST: LoongArch: Update dts to support Loongson UART driver.

Change to use the Loongson UART driver for Loongson-2K2000,
Loongson-2K1000 and Loongson-2K0500.

Signed-off-by: Haowei Zheng <[email protected]>

Link: https://lore.kernel.org/all/[email protected]/
Signed-off-by: Kexy Biscuit <[email protected]>

Author: Haowei Zheng

arch/loongarch/boot/dts/loongson-2k0500.dtsi

@@ -380,7 +380,7 @@
 		};
 
 		uart0: serial@1ff40800 {
-			compatible = "ns16550a";
+			compatible = "loongson,ls2k0500-uart", "loongson,ls7a-uart";
 			reg = <0x0 0x1ff40800 0x0 0x10>;
 			clock-frequency = <100000000>;
 			interrupt-parent = <&eiointc>;

arch/loongarch/boot/dts/loongson-2k1000.dtsi

@@ -297,7 +297,7 @@
 		};
 
 		uart0: serial@1fe20000 {
-			compatible = "ns16550a";
+			compatible = "loongson,ls2k1000-uart", "loongson,ls7a-uart";
 			reg = <0x0 0x1fe20000 0x0 0x10>;
 			clock-frequency = <125000000>;
 			interrupt-parent = <&liointc0>;

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

@@ -250,7 +250,7 @@
 		};
 
 		uart0: serial@1fe001e0 {
-			compatible = "ns16550a";
+			compatible = "loongson,ls2k2000-uart";
 			reg = <0x0 0x1fe001e0 0x0 0x10>;
 			clock-frequency = <100000000>;
 			interrupt-parent = <&liointc>;