Base art_module_* products off module_*.

They're more consistent and closer to the products used in
build_mainline_modules.sh.

In particular this avoids the special case in
build/make/target/board/generic_arm64/BoardConfig.mk where
TARGET_BUILD_APPS affects TARGET_2ND_ARCH_VARIANT for arm64 builds.

Test: art/build/build-art-module.sh - check that produced APEXes are
  bit identical before and after the change.
Bug: 176171716
Change-Id: Iad847b8e718dc00e15a006853b36ae750d6b75a4
4 files changed