Export libui_headers as vndk header library

Export relevant headers as VNDK header library so this can build
successfully when BOARD_VNDK_VERSION is enabled.

This is actually ag/2828467+ag/2833066, which are probably overwritten
by some recent emulator related merge/CL on master, ag/3131017.

Bug: 69395141
Test: Both of the following 2 products can boot to home screen
    $ lunch aosp_x86-userdebug; m -j; emulator
    $ lunch aosp_x86_64-userdebug; m -j; emulator

Change-Id: I3a806dbe8f1f254ca1e06c002724ffbd4ae12e63
Merged-In: I3a806dbe8f1f254ca1e06c002724ffbd4ae12e63
(cherry picked from commit 2c82f2f9e3f2990a3f4512e19445a2dba9e715f6)
1 file changed
tree: 87487da6ca0512f66b16bff8890fda83f3394232
  1. host/
  2. shared/
  3. system/
  4. tests/
  5. Android.mk
  6. common.mk
  7. README