kernel/power/powersuspend: remove userspace dependency from powersuspend

make powersuspend not depend on a userspace initiator anymore, but use a hook
in autosleep instead.

Signed-off-by: Paul Reioux <reioux@gmail.com>

Conflicts:
	kernel/power/autosleep.c

Change-Id: I2f295379ab81c19bd631bd12ea32ee41b9b81f20
Merge "kernel/power/powersuspend: remove userspace dependency from powersuspend" into android-4.4