vendor/lineage: Depend on existing definition of empty

Defined and marked readonly in build/make here:
https://github.com/LineageOS/android_build/blob/7ddc50a066287b804a754951a597668d627478df/common/core.mk#L46

Change-Id: Ic233f0d41d03b28beb8d96c68692271d959fa188
1 file changed