tiny.mk: include LiveWallpapers

RenderScript now functions, so let's install LiveWallpapers by default.
Devices with insufficient space can add this to releasetools-extras.txt.

Conflicts:
	config/tiny.mk

(cherry picked from commit 5d75d89661be46d799d00c48de806493a698da7d)

Change-Id: Ifd74638dffe39819456eba4d2be8b4b5f078ff9c