rcu: Change function declaration to bool

rcu_cpu_has_callbacks() is declared int but is actually returning bool and
all call-sites currently use it as bool so the declaration should be bool
as well.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
1 file changed