Merge tag 'sunxi-core-for-4.15' of https://git.kernel.org/pub/scm/linux/kernel/git...

Pull "Allwinner core changes for 4.15" from Maxime Ripard:

A bunch of patches for the sunxi documentation and mach-sunxi. The most
notable feature is the introduction of the R40 support.

* tag 'sunxi-core-for-4.15' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  ARM: sunxi: add support for R40 SoC
  ARM: sunxi: fix the core number of V3s in sunxi README
  dt-bindings: add compatible string for Allwinner V3s SoC