Revert "[1/2] Base: Speed up booting on multicore devices"

This reverts commit f524acc7d9335e0eb705a96fe9997ec83bc7fc49.
[1/3] fb: Change density on the fly

PS3: Rebase

Change-Id: Idb64d17a8c129c31067659ad34d661b44f85188f

Conflicts:
	core/java/android/view/WindowManagerPolicy.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	services/java/com/android/server/wm/WindowManagerService.java