Merge tag 'irqchip-4.15-4' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm...

Pull irqchip updates for 4.15, take #4 from Marc Zyngier

 - A core irq fix for legacy cases where the irq trigger is not reported
   by firmware

 - A couple of GICv3/4 fixes (Kconfig, of-node refcount, error handling)

 - Trivial pr_err fixes

diff --cc drivers/irqchip/Kconfig
Simple merge

diff --cc drivers/irqchip/Makefile
Simple merge

diff --cc include/linux/irq.h
Simple merge

diff --cc kernel/irq/manage.c
Simple merge