Merge changes I88bf28f0,I257a458a,Id87eab2c into msm-3.0

* changes:
  msm: hotplug: Wait for power collapse completion in platform_cpu_kill()
  msm: pm-8x60: Expose additional APIs through pm.h
  msm: pm: Move pm.h back into "mach-msm" from "mach-msm/include/mach"