Document the machdep.pccard.pcic_irq tunable, which allows the user to tune the interrupt which will be given to the PCIC.  If the value supplied is illegal or not available, interrupts will be turned off and polled mode used instead.
Document the machdep.pccard.pcic_irq tunable, which allows the user to tune
the interrupt which will be given to the PCIC.  If the value supplied is
illegal or not available, interrupts will be turned off and polled mode
used instead.

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