The locking feature lists don't match reality as of v5.3-rc1:
* arm64 moved to queued spinlocks in commit:
c11090474d
("arm64: locking: Replace ticket lock implementation with qspinlock")
* xtensa moved to queued spinlocks and rwlocks in commit:
579afe866f
("xtensa: use generic spinlock/rwlock implementation")
* architecture-specific rwsem support was removed in commit:
46ad0840b1
("locking/rwsem: Remove arch specific rwsem files")
So update the feature lists accordingly, and remove the now redundant
rwsem-optimized list.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>