add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/arm/boot/dts/imx6ul-pico-dwarf.dts
..
..
@@ -32,7 +32,7 @@
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 };
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 &i2c2 {
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-	clock_frequency = <100000>;
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+	clock-frequency = <100000>;
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 	pinctrl-names = "default";
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 	pinctrl-0 = <&pinctrl_i2c2>;
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 	status = "okay";