Notify callbacks on "any" wallpaper change

Callbacks are not notified when the wallpaper is changed to
a live wallpaper.  This patch notifies callbacks of the change
regardless of the type of wallpaper be set.

Change-Id: Icbb7b825cd7e7096c90c5498b6fee0bc61a3de3b

Conflicts:
	services/java/com/android/server/WallpaperManagerService.java

	modified:   services/java/com/android/server/WallpaperManagerService.java