misc: fix typos in copyright declaration

Add a space after comma.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Message-Id: <1427374663-10168-1-git-send-email-arei.gonglei@huawei.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/bootdevice.c b/bootdevice.c
index 673bfef..3cdc0d7 100644
--- a/bootdevice.c
+++ b/bootdevice.c
@@ -1,7 +1,7 @@
 /*
  * QEMU Boot Device Implement
  *
- * Copyright (c) 2014 HUAWEI TECHNOLOGIES CO.,LTD.
+ * Copyright (c) 2014 HUAWEI TECHNOLOGIES CO., LTD.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal