frameworks/base: Call setDirtyRect to update dirty rectangle

This change updates dirty rectangle instead of dirty region of a
surface.

Change-Id: Ic5c6e68ff644911a596a2432fd14868edbff9b17
SysUI: Don't recreate controllers.

The various controllers, such as mLocationController, get recreated
every time the status bar is recreated due to a theme change.  We
should only need to create these if they are null, otherwise use
the controller as is.  Also, each of these controlers registers
themselves as a broadcast receiver and are never unregistered before
recreating them.

Change-Id: I663c3406c9883916c4aa7d518858af2fed943475