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.
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.