Enable hardware clock write access

Signed-off-by: Varun Chitre <varun.chitre15@gmail.com>
Asynchronous Fsync: initial extraction of Async Fsync from HTC

Signed-off-by: Paul Reioux <reioux@gmail.com>
fs/Kconfig: fix warning related to AYSNC_FSYNC patch

Signed-off-by: Paul Reioux <reioux@gmail.com>