Make libbt-vendor build with the VNDK.

When the vndk is enabled (BOARD_VNDK_VERSION=current),
vendor libraries must only link against vendor variants
in the build system. This also means that they receive
restricted sets of headers and that automatic global
headers are restricted.

Test: build libbt-vendor with BOARD_VNDK_VERSION=current
Bug: 69574580
Change-Id: Ibb9a236de3059612e414b17d160ddac9168ef536
7 files changed
tree: f9fe08ef2b7be7cafe92d5c4233a401c6afb1ea8
  1. libbt-vendor/
  2. Android.mk
  3. CleanSpec.mk