b43/b43legacy: fix my copyright notices

Fix my copyright notices in b43 and b43legacy.

Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Cc: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43legacy/xmit.c b/drivers/net/wireless/b43legacy/xmit.c
index d558a3a..23496f4 100644
--- a/drivers/net/wireless/b43legacy/xmit.c
+++ b/drivers/net/wireless/b43legacy/xmit.c
@@ -5,7 +5,7 @@
   Transmission (TX/RX) related functions.
 
   Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
-  Copyright (C) 2005 Stefano Brivio <st3@riseup.net>
+  Copyright (C) 2005 Stefano Brivio <stefano.brivio@polimi.it>
   Copyright (C) 2005, 2006 Michael Buesch <mb@bu3sch.de>
   Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
   Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>