rcu: Fix synchronize_rcu_expedited() header comment

This commit brings the synchronize_rcu_expedited() function's header
comment into line with the new implementation.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2016-01-28 18:48:37 -08:00
commit 26ece8ef6e