iwlwifi: mvm: BT Coex - minor API change

The BT Coex API underwent a minor backward compatible API
change.
We now need to set an invalid value in the override fields.
While at it, add kerneldoc comments on the fields in the
command.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/mvm/coex.c b/drivers/net/wireless/iwlwifi/mvm/coex.c
index 3755ad4..a1403d4 100644
--- a/drivers/net/wireless/iwlwifi/mvm/coex.c
+++ b/drivers/net/wireless/iwlwifi/mvm/coex.c
@@ -580,6 +580,8 @@
 	bt_cmd->bt4_antenna_isolation = iwlwifi_mod_params.ant_coupling;
 	bt_cmd->bt4_tx_tx_delta_freq_thr = 15;
 	bt_cmd->bt4_tx_rx_max_freq0 = 15;
+	bt_cmd->override_primary_lut = BT_COEX_INVALID_LUT;
+	bt_cmd->override_secondary_lut = BT_COEX_INVALID_LUT;
 
 	flags = iwlwifi_mod_params.bt_coex_active ?
 			BT_COEX_NW : BT_COEX_DISABLE;