add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/alpha/kernel/irq_pyxis.c
..
..
@@ -107,5 +107,6 @@
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 		irq_set_status_flags(i, IRQ_LEVEL);
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 	}
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-	setup_irq(16+7, &isa_cascade_irqaction);
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+	if (request_irq(16 + 7, no_action, 0, "isa-cascade", NULL))
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+		pr_err("Failed to register isa-cascade interrupt\n");
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 }