add audio

hc

2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

 kernel/drivers/net/wan/x25_asy.h
..
..
@@ -35,7 +35,6 @@
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 #define SLF_INUSE	0		/* Channel in use               */
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 #define SLF_ESCAPE	1               /* ESC received                 */
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 #define SLF_ERROR	2               /* Parity, etc. error           */
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-#define SLF_OUTWAIT	4		/* Waiting for output		*/
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 };
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