New Sysfs options for cache_pressure, dirty_writeback, dirty_expire_interval

Big thanks to @temasek for sharing. and to  Boy Petersen for adding.

https://github.com/temasek/android_kernel_samsung_smdk4412/commit/3c7feedbb8a11b8146ba8db2eea2ceae3b0950c4
https://github.com/temasek/android_kernel_samsung_smdk4412/commit/5372ebd49ba69df9c2d6161e3e61c41b0b3b0321
https://github.com/temasek/android_kernel_samsung_smdk4412/commit/efe298c85fa8c46fcbdd1aff7a0998bab1ff369a

I made my own configs/fixes and tuning as always :)

Conflicts:
	fs/dcache.c
	mm/page-writeback.c
	mm/page_alloc.c
Update Auto dirty_writeback,dirty_expire and cache_pressure!

Now we have more sysfs controls and more correct code.
REALTIME by default changed to NOATIME! boost to battery save and I/O speed!
Also mount with NODIRATIME by DEFAULT!
Reduced the OOM limit to 82MB free, was 130MB waste of ram

Conflicts:
	drivers/staging/android/lowmemorykiller.c
Try and reduce used RAM by kernel
WIFI: Optimizations

Conflicts:
	drivers/net/wireless/bcmdhd/Makefile
couple config changes
We have 16GB internal storage. best to set 1024 and tune the EXTERNAL!

Conflicts:
	include/linux/mm.h
Reduced Logger Allocated RAM.

Conflicts:
	drivers/staging/android/logger.c
mxt224_u1: I have seen these warnings much too often now

Conflicts:
	drivers/input/touchscreen/mxt224_u1.c
mxt224_u1: fix tsp_threshold sysfs
and store the value in platform structure

Adapted to fluxi screen tune patch.

TNX to GM!
Updated SLEEPY GOV with deep sleep addon.

Conflicts:
	drivers/cpufreq/cpufreq_sleepy.c
Revert "Update Auto dirty_writeback,dirty_expire and cache_pressure!"

This reverts commit 2289cb620a888350832d7ab3fbfee75d6fe02419.
Revert "New Sysfs options for cache_pressure, dirty_writeback, dirty_expire_interval"

This reverts commit a8cc650b0264d5916c9c58c592a782ffd795c509.
Revert "Reduced the OOM limit to 82MB free, was 130MB waste of ram"

This reverts commit c2d8773a3969382e232c364e1664e8c7b6821531.
Revert "this change initialize the MTP part according to the ROM type."

This reverts commit 3654fc67cd662f5ed5156f78859f2c6a310dd32d.