ramips: fix MT7621 dtsi

Fix SysTick reg
Add uartlite2 and uartlite3 nodes

Signed-off-by: Deng Qingfang <dengqf6@mail2.sysu.edu.cn>

target/linux/ramips/dts/mt7621.dtsi

@@ -138,9 +138,9 @@
 			status = "disabled";
 		};
 
-		systick: systick@d00 {
+		systick: systick@500 {
 			compatible = "ralink,mt7621-systick", "ralink,cevt-systick";
-			reg = <0xd00 0x10>;
+			reg = <0x500 0x10>;
 
 			resets = <&rstctrl 28>;
 			reset-names = "intc";
@@ -178,6 +178,42 @@
 			no-loopback-test;
 		};
 
+		uartlite2: uartlite2@d00 {
+			compatible = "ns16550a";
+			reg = <0xd00 0x100>;
+
+			clock-frequency = <50000000>;
+
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SHARED 27 IRQ_TYPE_LEVEL_HIGH>;
+
+			reg-shift = <2>;
+			reg-io-width = <4>;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart2_pins>;
+
+			status = "disabled";
+		};
+
+		uartlite3: uartlite3@e00 {
+			compatible = "ns16550a";
+			reg = <0xe00 0x100>;
+
+			clock-frequency = <50000000>;
+
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SHARED 28 IRQ_TYPE_LEVEL_HIGH>;
+
+			reg-shift = <2>;
+			reg-io-width = <4>;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart3_pins>;
+
+			status = "disabled";
+		};
+
 		spi0: spi@b00 {
 			status = "disabled";