mei: use link and unlink terms for connecting ME and HOST client

1. rename mei_me_cl_update_filext to mei_me_cl_link
2. rename mei_remove_client_from_file_list to mei_me_cl_unlink

Code style, documenation, and usage of both function is updated

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index 7416241..095d059 100644
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -73,10 +73,10 @@
 	dev->iamthif_cl.state = MEI_FILE_DISCONNECTED;
 
 	/* find ME amthi client */
-	i = mei_me_cl_update_filext(dev, &dev->iamthif_cl,
+	i = mei_me_cl_link(dev, &dev->iamthif_cl,
 			    &mei_amthi_guid, MEI_IAMTHIF_HOST_CLIENT_ID);
 	if (i < 0) {
-		dev_dbg(&dev->pdev->dev, "failed to find iamthif client.\n");
+		dev_info(&dev->pdev->dev, "failed to find iamthif client.\n");
 		return;
 	}