ARM: More SoC support updates

This branch contains a handful of updates of SoC base code that had
dependencies on other external trees that have now been merged:

* Support for the new EXYNOS5250 SoC from Samsung
* SMP and power domain support for Tegra3 from NVIDIA
* ux500 updates for exporting SoC information through sysfs
Merge branch 'renesas/soc' into next/soc2