waitqueue: Add license info to source file.

Signed-off-by: Keir Fraser <keir@xen.org>

xen/common/wait.c

@@ -2,6 +2,22 @@
  * wait.c
  * 
  * Sleep in hypervisor context for some event to occur.
+ * 
+ * Copyright (c) 2010, Keir Fraser <keir@xen.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <xen/config.h>

xen/include/xen/wait.h

@@ -2,6 +2,8 @@
  * wait.h
  * 
  * Sleep in hypervisor context for some event to occur.
+ * 
+ * Copyright (c) 2010, Keir Fraser <keir@xen.org>
  */
 
 #ifndef __XEN_WAIT_H__