arm/arm64: irq: warn only when affinity really breaks

Following change causes unnecessary warnings printed for those IRQ's
which are affine to several CPU's when one of these CPU's is taken off
line. It shouldn't be considered a broken affinity when one online
CPU can satisfy the IRQ's affinity preference.

commit 0410136f
Author: Praveen Chidambaram <pchidamb@codeaurora.org>
Date:   Mon Jun 23 08:58:08 2014 -0600

arm: irq: Notify affinity change when migrating IRQs during hotplug

Hotplug causes IRQs affine to a core that is being taken down to migrate
to an online core. This is done by directly calling the irq_set_affinity
associated with the irq_chip structure. Instead using the
irq_set_affinity() api lets the notifications bubble through.

Change-Id: Id4ab4e751f647cbe07ab159f371a5ef94db988cf
Signed-off-by: Peng Liu <a22543@motorola.com>
Reviewed-on: http://gerrit.mot.com/755421


SLTApproved: Slta Waiver <sltawvr@motorola.com>
SME-Granted: SME Approvals Granted
Tested-by: Jira Key <jirakey@motorola.com>
Reviewed-by: Lian-Wei Wang <lian-wei.wang@motorola.com>
Reviewed-by: Christopher Fries <cfries@motorola.com>
Submit-Approved: Jira Key <jirakey@motorola.com>