SoC-level changes for tegra and omap

This adds support for the new tegra30 SoC, as well as small
changes to support minor variations of existing omap SoCs.
Merge branch 'depends/rmk/for-linus' into next/soc

Conflicts:
	arch/arm/mach-tegra/board-dt-tegra20.c
	arch/arm/mach-tegra/common.c