cpu hotplug: convert more drivers

[Sebastian Andrzej Siewior]

The first patch removes no the longer used CPU_STARTING & CPU_DYING notifier
from the core code. The remaining patches convert drivers to the new interface.
Most of them can be applied right away. A few (raid5, mvneta) use the new multi
instance interface which has been posted recently [0].

The whole series including the multi intance support is also available at

  git://git.kernel.org/pub/scm/linux/kernel/git/bigeasy/hotplug-staging.git hp_queue

[0] http://lkml.kernel.org/r/1471024183-12666-1-git-send-email-bigeasy@xxxxxxxxxxxxx

Cc: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
Cc: Neil Brown <neilb@xxxxxxxx>