exfat: AIO Optimization compatibility fixup

Signed-off-by: Paul Reioux <reioux@gmail.com>
Change-Id: I718fcfc16ea731ec3173facfe075a6965883ec97
Asynchronous Fsync: initial extraction of Async Fsync from HTC

Change-Id: Idbc954c9d7dcad8249f1cfde13fdb22f8e680fa6
Signed-off-by: Paul Reioux <reioux@gmail.com>
enable async fsync

Change-Id: I317adf1fa6126ce06cd1a18db4386a926a1fad7f
Merge changes I317adf1f,Idbc954c9,I718fcfc1 into du44

* changes:
  enable async fsync
  Asynchronous Fsync: initial extraction of Async Fsync from HTC
  exfat: AIO Optimization compatibility fixup