Merge tag 'amlogic-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman...

Pull "Amlogic SoC updates for v4.15" from Kevin Hilman:

- add SMP support to Meson8/8b

* tag 'amlogic-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
  ARM: meson: enable MESON_IRQ_GPIO in Kconfig for meson8b
  ARM: meson: Add SMP bringup code for Meson8 and Meson8b
  ARM: smp_scu: allow the platform code to read the SCU CPU status
  ARM: smp_scu: add a helper for powering on a specific CPU
  dt-bindings: Amlogic: Add Meson8 and Meson8b SMP related documentation