Merge tag 'v3.19-meson-soc' of https://github.com/carlocaione/linux-meson into next/soc

Merge tag 'v3.19-meson-soc' of https://github.com/carlocaione/linux-meson into next/soc

Pull "ARM: meson: SOC related changes" from Carlo Caione:

This is the pull request for the SoC related changes for the 3.19.
The support for Meson8 is added together with L2 cache management.

* tag 'v3.19-meson-soc' of https://github.com/carlocaione/linux-meson:
  clocksource: meson6: Select CLKSRC_MMIO
  ARM: meson: enable L2 cache
  ARM: meson: document meson8 compatible properties
  ARM: meson: add meson8 support

Signed-off-by: Arnd Bergmann <arnd@arndb.de>