locking/qspinlock: Move pv_ops into x86 directory
The pv_ops belongs to x86 custom infrastructure and cleans up the cna_configure_spin_lock_slowpath() with standard code. This is preparation for riscv support CNA qspoinlock. Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Signed-off-by: Guo Ren <guoren@kernel.org>
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