Revert "Sweek2wake mode now switchable through "/sys/kernel/sweep2wake/s2w_switch" while running Android system without rebooting."

This reverts commit a2fe4bfc0ea97f6fd3cef1dd307293b3eb54fa5a.
Revert "touchscreen: include s2w in makefile. cyttsp_core.c is the driver tamsui devices use"

This reverts commit eff99cc03541bc6f48fb44413049376458682bfa.
Revert "readahead: set max to 4096, min to 64"

This reverts commit bd4ce2ff521032ef1d394d46a1ed2f7843be3b74.
Revert "board-tamsui: tapioca + mesona: potential better ram values"

This reverts commit 7380b859cc50b708e7c6418abca7a36dfd843e4e.
Makefile: redo compiling optimizations