Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh64-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh64-2.6:
  sh64: Add a sane pm_power_off implementation.
  sh64: Use generic BUG_ON()/WARN_ON().
  sh64: Trivial build fixes.
  sh64: Drop deprecated ISA tuning for legacy toolchains.