MFC r208168: It is not necessary (and in some cases harmful) to hardcode ata_kauai's IRQ to 39 on K2 devices, as well as Shasta ones.
MFC r208168:
It is not necessary (and in some cases harmful) to hardcode ata_kauai's
IRQ to 39 on K2 devices, as well as Shasta ones.

Reported by:	Andreas Tobler
Approved by:	re (kib)

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