Merge branch 'treewide/cleanup' into next/cleanup

These are a couple of changes that may conflict with other branches,
so we're keeping them in a separate branch that can be merged into
those if necessary.

* treewide/cleanup:
  ARM: use "depends on" for SoC configs instead of "if" after prompt
  ARM/clocksource: use automatic DT probing for ux500 PRCMU
  ARM: use const and __initconst for smp_operations
  ARM: hisi: do not export smp_operations structures