Revert "f_fs: ffs_func_free: cleanup requests allocated by autoconfig"

This reverts commit 7eb23dd35ee8adfcbe546e41b84417eee80b5708.
Revert "i.MX25 GPT clock fix: ensure correct the clock source"

This reverts commit 0822bbb55bff479e6ba06ae39675bf489a85ec83.
Revert "mutex: Make more scalable by doing less atomic operations"

This reverts commit a99b6a14f9cfe0a58512ed2b88f3d5b77f016e33.
Revert "hrtimer: Prevent enqueue of hrtimer on dead CPU"

This reverts commit f3223b5b874615866dfb20f167cd490e9af7ef91.
Revert "hrtimer: Consider preemption when migrating hrtimer cpu_bases"

This reverts commit 6d8fb5d8af85f7e4f9fb8a0974a6468c9a0091c8.