Make audio_extn 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 audio_extn with BOARD_VNDK_VERSION=current
Bug: 69574580
Change-Id: Iaae465a68d04bb991a95442a0114591849d282a3
2 files changed
tree: 29c2e1a9b1c028fce6ff0b311b819ba1cd868bf7
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk