Add out/soong/late-${TARGET_PRODUCT}.mk

Read out/soong/late-${TARGET_PRODUCT}.mk after reading Android.mk files
to allow Soong's makevars singleton to use $(call dist-for-goals).

Bug: 153485543
Test: m lint-check dist
Change-Id: I7754fd1b8dab508c96ad59beed67f0d6c4ff75f0
Merged-In: I7754fd1b8dab508c96ad59beed67f0d6c4ff75f0
(cherry picked from commit 8ca4092a)