Merge "Revert "Revert "Export variable to soong for converting vintf_co...""...

Merge "Revert "Revert "Export variable to soong for converting vintf_co..."" into main am: 86514e58

Original change: https://android-review.googlesource.com/c/platform/build/+/3256525



Change-Id: I0c68673fed567ef5b33bb73868eda44795a644d8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>