NetBpfLoad: use __ANDROID_API_FUTURE__ for unreleased

See https://android-review.git.corp.google.com/c/platform/system/core/+/3309495

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I148d7efc21ab3eea2db484be1b1ca706e2ed632c
1 file changed