Merge branch 'vexpress-soc' of git://git.linaro.org/people/pawelmoll/linux into next/soc

This reworks the generic support for versatile express, in part
as preparation for the arm64 version of it that can now share
more of the code.

From Pawel Moll <pawel.moll@arm.com>:

* 'vexpress-soc' of git://git.linaro.org/people/pawelmoll/linux:
  ARM: vexpress: Remove motherboard dependencies in the DTS files
  ARM: vexpress: Start using new Versatile Express infrastructure
  ARM: vexpress: Add config bus components and clocks to DTs
  mfd: Versatile Express system registers driver
  mfd: Versatile Express config infrastructure

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