add gpio led uart

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2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/tools/virtio/linux/compiler.h
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..
@@ -7,4 +7,5 @@
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 #define READ_ONCE(var) (*((volatile typeof(var) *)(&(var))))
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+#define __aligned(x) __attribute((__aligned__(x)))
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 #endif