ARM: hotplug: Introduce dummy_cpu_kill

Most platforms don't implement their cpu_kill method.
Some because they simply don't offer the capability, some other
because nobody cared enough to implement the necessary code.

Either way, this code is duplicated all over the place. Implement
a global dummy_cpu_kill method and convert all SMP (but shmobile)
to use it. Hopefully the "dummy" prefix will be an insentive
for people to do the right thing.
29 files changed