cifs: make multichannel warning more visible

When no interfaces are returned by the server we cannot open multiple
channels. Make it more obvious by reporting that to the user at the
VFS log level.
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/cifs/sess.c

@@ -101,7 +101,7 @@ int cifs_try_adding_channels(struct cifs_ses *ses)
 	iface_count = ses->iface_count;
 	if (iface_count <= 0) {
 		spin_unlock(&ses->iface_lock);
-		cifs_dbg(FYI, "no iface list available to open channels\n");
+		cifs_dbg(VFS, "no iface list available to open channels\n");
 		return 0;
 	}
 	ifaces = kmemdup(ses->iface_list, iface_count*sizeof(*ifaces),