build_irq
unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
irq = build_irq(fixup, iclr_reg, imap_reg);
irq = build_irq(inofixup, iclr, imap);
irq = build_irq(ign_fixup, iclr, imap);
return build_irq(ino, iclr, imap);
return build_irq(sbus_level, iclr, imap);
return build_irq(inofixup, iclr, imap);
return build_irq(0, iclr, imap);
return build_irq(sbus_level, iclr, imap);