Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/rcu-doc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/rcu-doc-2.6:
  Doc: Fix spelling in RCU/rculist_nulls.txt.
  Doc: Fix wrong API example usage of call_rcu().
  Doc: Fix missing whitespaces in RCU documentation.