anv: restore anv_device_import_bo to simplify patch

Avoids further changes with upcoming android support.

Run-All-Tests: True
Change-Id: I54c092a94ac1a798bcaf0e934dd4547784b029a5
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/mesa/+/796883
Reviewed-by: John Bauman <jbauman@google.com>
3 files changed