Fixes the following W=1 kernel build warning(s):

 drivers/infiniband/hw/i40iw/i40iw_utils.c:66: warning: Function parameter or member 'ipv4' not described in 'i40iw_arp_table'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:148: warning: Function parameter or member 'notifier' not described in 'i40iw_inetaddr_event'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:148: warning: Excess function parameter 'notfier' description in 'i40iw_inetaddr_event'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:224: warning: Function parameter or member 'notifier' not described in 'i40iw_inet6addr_event'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:224: warning: Excess function parameter 'notfier' description in 'i40iw_inet6addr_event'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:273: warning: Function parameter or member 'notifier' not described in 'i40iw_net_event'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:273: warning: Excess function parameter 'notfier' description in 'i40iw_net_event'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:320: warning: Function parameter or member 'notifier' not described in 'i40iw_netdevice_event'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:320: warning: Excess function parameter 'notfier' description in 'i40iw_netdevice_event'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:663: warning: Function parameter or member 'desc' not described in 'i40iw_debug_buf'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:792: warning: Function parameter or member 'sdinfo' not described in 'i40iw_cqp_sds_cmd'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:792: warning: Excess function parameter 'sd_info' description in 'i40iw_cqp_sds_cmd'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:895: warning: Function parameter or member 't' not described in 'i40iw_terminate_timeout'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:895: warning: Excess function parameter 'context' description in 'i40iw_terminate_timeout'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:953: warning: Function parameter or member 'dev' not described in 'i40iw_cqp_spawn_worker'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:953: warning: Excess function parameter 'iwdev' description in 'i40iw_cqp_spawn_worker'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:1058: warning: Function parameter or member 'dev' not described in 'i40iw_cqp_query_fpm_values_cmd'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:1058: warning: Excess function parameter 'iwdev' description in 'i40iw_cqp_query_fpm_values_cmd'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:1120: warning: Function parameter or member 'dev' not described in 'i40iw_vf_wait_vchnl_resp'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:1120: warning: Excess function parameter 'iwdev' description in 'i40iw_vf_wait_vchnl_resp'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:1467: warning: Function parameter or member 't' not described in 'i40iw_hw_stats_timeout'
 drivers/infiniband/hw/i40iw/i40iw_utils.c:1467: warning: Excess function parameter 'vsi' description in 'i40iw_hw_stats_timeout'

Link: https://lore.kernel.org/r/20210118223929.512175-16-lee.jones@linaro.org
Cc: Faisal Latif <faisal.latif@intel.com>
Cc: Shiraz Saleem <shiraz.saleem@intel.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>