add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/include/linux/irqhandler.h
..
..
@@ -10,6 +10,5 @@
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 struct irq_desc;
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 struct irq_data;
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 typedef	void (*irq_flow_handler_t)(struct irq_desc *desc);
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-typedef	void (*irq_preflow_handler_t)(struct irq_data *data);
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 #endif