fs/dyn_sync_cntrl: Linux 3.4 Kernel compatibility fixup

Signed-off-by: faux123 <reioux@gmail.com>
Added optimized ARM RWSEM algorithm.
fs/dyn_fsync: check dyn fsync control's active prior to performing fsync ops

Signed-off-by: Andrew Bartholomew <andrewb03@gmail.com>
char: Added FRANDOM driver