defconfig: enable LZ4 compression

Change-Id: I6c7c14a669400997b6d248a655a62afd28182e06
fs/dyn_sync_cntrl: dynamic sync control

The dynamic sync control interface uses new power_suspend interface

While screen is on, file sync is disabled
when screen is off, a file sync is called to flush all outstanding writes
and restore file sync operation as normal.

updated for 8974 kernels

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

Conflicts:

	fs/Kconfig

Signed-off-by: DooMLoRD <metoo.mememe@gmail.com>
defconfig: enable dynamic file sync

Change-Id: Id29fd2a615687badc78f2ed257c55c20fc87a17c