Merge branch 'x86-urgent-for-linus' of git://

Pull x86 fix from Thomas Gleixner:
 "Restore the retrigger callbacks in the IO APIC irq chips. That
  addresses a long standing regression which got introduced with the
  rewrite of the x86 irq subsystem two years ago and went unnoticed so

* 'x86-urgent-for-linus' of git://
  x86/ioapic: Restore IO-APIC irq_chip retrigger callback