KVM: Update Red Hat copyrights

Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index b81f0eb..66cf65b 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -2,6 +2,7 @@
  * kvm eventfd support - use eventfd objects to signal various KVM events
  *
  * Copyright 2009 Novell.  All Rights Reserved.
+ * Copyright 2010 Red Hat, Inc. and/or its affiliates.
  *
  * Author:
  *	Gregory Haskins <ghaskins@novell.com>