Revert "include/linux/pagemap.h : Revert changes from SAMSUNG OSRC SEA KK N7100XXUFND4 Partial Update"

This reverts commit f25027d3f012bd4ab6e2670ec51f0623800e8c6c.
Revert "kernel/sched.c : Revert changes from SAMSUNG OSRC SEA KK N7100XXUFND4 Partial Update"

This reverts commit 2f88ea0dd15bf50bc6f04f849ac89b3fedec908a.
Revert "SAMSUNG OSRC SEA KK N7100XXUFND4 Update PART 2"

This reverts commit 1388f9fd1b859d56d600f3a040fff7fe0e430315.
Revert "SAMSUNG OSRC SEA KK N7100XXUFND4 Update"

This reverts commit ac5c6c6d62ef41681f8a979ba36dc2f7620cbfe1.
Revert Newly implemented Linaro optimisations
SAMSUNG OSRC SEA KK N7100XXUFND4 Important Updates
Add v4.2.1 configs
SAMSUNG OSRC SEA KK N7100XXUFND4 Important Updates (N710x)
Rename v4.2.1_R2
Revert: Revert "SAMSUNG OSRC SEA KK N7100XXUFND4 Update"
Revert "Revert "SAMSUNG OSRC SEA KK N7100XXUFND4 Update PART 2""
Rename v4.2.1_R3