scsi: lpfc: switch lpfc_irq_rebalance() to using cpumask_next_wrap()

Calling cpumask_next_wrap_old() with starting CPU equal to wrapping CPU
is the same as request to find next CPU, wrapping around if needed.

cpumask_next_wrap() is the proper replacement for that.

Reviewed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Yury Norov <yury.norov@gmail.com>