Revert "kgsl: Implement conservative scaling policy"

This reverts commit 64b83bb00d713b5c4e43579e88d6bd160b7c13f9.
fs: Add exFAT file system (version 1.2.9)

Change-Id: I57b5b5d1d13813482dfd0fc490108e83a8a73af6
Revert "Revert "Revert "msm: avoid stack frame exceeding the limit of 1024 bytes"""

This reverts commit c4ee4b68dedeecdb7824278782d37dc64610f568.
Revert "sched/fair: Optimize find_busiest_queue()"

This reverts commit c84fa10d5cfd5abbb0c1398c9085e647951f21ff.
Revert "sched/fair: Optimize cgroup pick_next_task_fair()"

This reverts commit 1c17e1f41f5d51815e7ea2b19aabd8653b7e78c1.