RDMA/bnxt_re: Fix the usage of control path spin locks

RDMA/bnxt_re: Fix the usage of control path spin locks

Control path completion processing always runs in tasklet context. To
synchronize with the posting thread, there is no need to use the irq
variant of spin lock. Use spin_lock_bh instead.

Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Link: https://patch.msgid.link/r/1728912975-19346-2-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>