genirq/affinity: Move two stage affinity spreading into a helper function

No functional change. Prepares for supporting allocating and affinitizing
interrupt sets.

[ tglx: Minor changelog tweaks ]

Signed-off-by: Ming Lei <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: [email protected]
Cc: Hannes Reinecke <[email protected]>
Cc: Keith Busch <[email protected]>
Cc: Sagi Grimberg <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]

0 files changed, 0 insertions, 0 deletions