V4L/DVB (7248): dabfirmware.h add missing license

Received written ack from the dabusb author
that the firmware is BSD licensed.
As bonus clarify copyright holder.
Signed-off-by: Nmaximilian attems <max@stro.at>
Acked-by: NDeti Fliegl <deti@fliegl.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/dabfirmware.h

 /*
  * dabdata.h - dab usb firmware and bitstream data
+ *
+ * Copyright (C) 1999 BayCom GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that redistributions of source
+ * code retain the above copyright notice and this comment without
+ * modification.
  */
 
 static INTEL_HEX_RECORD firmware[] = {