Set LOCAL_PATH to the path to the blueprint file so that make can
generate MODULE-IN-* rules to make mma work. Switch to using
LOCAL_PREBUILT_MODULE_FILE instead of LOCAL_SRC_FILES to specify the
location of the prebuilts relative to $(TOP).
This should also make notice files work.
Change-Id: I51c7aa1187e68c4c9095687461dd5e76cbd7292d