iwlwifi: mvm: support description for user triggered fw dbg collection

Add to the user triggered fw debug collection support for describing
the reason of the trigger.
This could be useful for identifying a dump by a unique id, passed as
a description.

Signed-off-by: Golan Ben-Ami <golan.ben.ami@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c

@@ -1029,7 +1029,8 @@ static ssize_t iwl_dbgfs_fw_dbg_collect_write(struct iwl_mvm *mvm,
 	if (ret)
 		return ret;
 
-	iwl_mvm_fw_dbg_collect(mvm, FW_DBG_TRIGGER_USER, NULL, 0, NULL);
+	iwl_mvm_fw_dbg_collect(mvm, FW_DBG_TRIGGER_USER, buf,
+			       (count - 1), NULL);
 
 	iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE);
 
@@ -1451,7 +1452,7 @@ MVM_DEBUGFS_WRITE_FILE_OPS(bt_force_ant, 10);
 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8);
 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d0i3_refs, 8);
 MVM_DEBUGFS_READ_WRITE_FILE_OPS(fw_dbg_conf, 8);
-MVM_DEBUGFS_WRITE_FILE_OPS(fw_dbg_collect, 8);
+MVM_DEBUGFS_WRITE_FILE_OPS(fw_dbg_collect, 64);
 MVM_DEBUGFS_WRITE_FILE_OPS(cont_recording, 8);
 
 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING