block: fix backport of row patches

Change-Id: I5898bfaf153144a370d0f8517e43bf68b03ae605
fs: fsync: FOUND A BATTERY EATER

- Update Dynamic Fsync to version 2
- Remove Battery Friend control:
                                 Since we're using HTC's Asynchronous Fsync
                                 Dynamic Fsync is/should be disabled at all.
                                 Battery Friend locked it being enabled all
                                 the time - this doesn't only conflict with
                                 Async Fsync - it also runs all the time in
                                 background.