Revert "msm: hotplug: wait for hotplug completion event from secondary core"

This reverts commit ba7ea0b14c00684585ea16a37fb580ac18ecc5c7.

Conflicts:
	arch/arm/mach-msm/pm-8x60.c
Merge "Revert "msm: hotplug: wait for hotplug completion event from secondary core"" into jellybean-mr1