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

 drivers/net/wireless/intel/iwlegacy/4965.c:35: warning: Function parameter or member 'il' not described in 'il4965_verify_inst_sparse'
 drivers/net/wireless/intel/iwlegacy/4965.c:35: warning: Function parameter or member 'image' not described in 'il4965_verify_inst_sparse'
 drivers/net/wireless/intel/iwlegacy/4965.c:35: warning: Function parameter or member 'len' not described in 'il4965_verify_inst_sparse'
 drivers/net/wireless/intel/iwlegacy/4965.c:66: warning: Function parameter or member 'il' not described in 'il4965_verify_inst_full'
 drivers/net/wireless/intel/iwlegacy/4965.c:66: warning: Function parameter or member 'image' not described in 'il4965_verify_inst_full'
 drivers/net/wireless/intel/iwlegacy/4965.c:66: warning: Function parameter or member 'len' not described in 'il4965_verify_inst_full'
 drivers/net/wireless/intel/iwlegacy/4965.c:105: warning: Function parameter or member 'il' not described in 'il4965_verify_ucode'
 drivers/net/wireless/intel/iwlegacy/4965.c:329: warning: Function parameter or member 'il' not described in 'il4965_load_bsm'
 drivers/net/wireless/intel/iwlegacy/4965.c:416: warning: Function parameter or member 'il' not described in 'il4965_set_ucode_ptrs'
 drivers/net/wireless/intel/iwlegacy/4965.c:451: warning: Function parameter or member 'il' not described in 'il4965_init_alive_start'
 drivers/net/wireless/intel/iwlegacy/4965.c:583: warning: Function parameter or member 'eeprom_voltage' not described in 'il4965_get_voltage_compensation'
 drivers/net/wireless/intel/iwlegacy/4965.c:583: warning: Function parameter or member 'current_voltage' not described in 'il4965_get_voltage_compensation'
 drivers/net/wireless/intel/iwlegacy/4965.c:668: warning: Function parameter or member 'il' not described in 'il4965_interpolate_chan'
 drivers/net/wireless/intel/iwlegacy/4965.c:668: warning: Function parameter or member 'channel' not described in 'il4965_interpolate_chan'
 drivers/net/wireless/intel/iwlegacy/4965.c:668: warning: Function parameter or member 'chan_info' not described in 'il4965_interpolate_chan'
 drivers/net/wireless/intel/iwlegacy/4965.c:1242: warning: Function parameter or member 'il' not described in 'il4965_send_tx_power'
 drivers/net/wireless/intel/iwlegacy/4965.c:1537: warning: Function parameter or member 'il' not described in 'il4965_txq_update_byte_cnt_tbl'
 drivers/net/wireless/intel/iwlegacy/4965.c:1537: warning: Function parameter or member 'txq' not described in 'il4965_txq_update_byte_cnt_tbl'
 drivers/net/wireless/intel/iwlegacy/4965.c:1537: warning: Function parameter or member 'byte_cnt' not described in 'il4965_txq_update_byte_cnt_tbl'
 drivers/net/wireless/intel/iwlegacy/4965.c:1564: warning: Function parameter or member 'il' not described in 'il4965_hw_get_temperature'
 drivers/net/wireless/intel/iwlegacy/4965.c:1564: warning: Excess function parameter 'stats' description in 'il4965_hw_get_temperature'
 drivers/net/wireless/intel/iwlegacy/4965.c:1633: warning: Function parameter or member 'il' not described in 'il4965_is_temp_calib_needed'

Cc: Stanislaw Gruszka <stf_xl@wp.pl>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Linux Wireless <ilw@linux.intel.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200819072402.3085022-25-lee.jones@linaro.org