vulkan: Add sync file support for magma

Bug:b/278904966

Change-Id: I0e0515e2d77530f8ea09cf532b36b7d5afea7667
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/mesa/+/855896
Reviewed-by: John Bauman <jbauman@google.com>
1 file changed