Make memory_order_acquire visible in global namespace

We were missing that using directive when including <atomic>.
Copied from bionic commit.

Bug:17736764

(cherry picked from commit 2a99455a87c4eea60698ecb699815607a93aaf8d)

Change-Id: I543a38f080d4ba19596aa32492d41ddf511ff5f9
1 file changed
tree: cb8168fbb97e70df9e53eee0fbe78a3aca10114f
  1. bin/
  2. lib/
  3. update.sh