Revert "futex-prevent-requeue-pi-on-same-futex.patch futex: Forbid uaddr == uaddr2 in futex_requeue(..., requeue_pi=1)"

This reverts commit 6655e1019e6efd8a55904e9a0407aad9842ac9e1.
Merge remote-tracking branch 'origin/cm-11.0' into cm-11.0