RDMA/bnxt_re: Use GFP_KERNEL in non atomic context

Use GFP_KERNEL instead of GFP_ATOMIC while allocating control path
structures which will be only called from non atomic context

Link: https://lore.kernel.org/r/1631709163-2287-10-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>