Merge tag 'irqchip-core-4.6' of git://git.infradead.org/users/jcooper/linux into irq/core

Pull irqchip core changes for v4.6 from Jason Cooper:

- mvebu (armada-370-xp)
   - MSI support
   - Deconflict with mvebu's arm64 code

- ts4800
   - Restrict when ts4800 driver can be built
   - Make ts4800_ic_ops static const

- bcm2836: Drop superfluous memory barrier