sched, autogroup, sysctl: use proc_dointvec_minmax instead.
sched: hide cfs_rq of autogroup if autogroup is disabled
mm: Adjust dirty writeback for IO boost
mm: optimize Kernel Samepage Merging
Makefile: Add AK LINARO OPT
tuna_ak_defconfig: Disable some DEBUG Options
Kernel Version: AK.053