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/b43/main.c b/drivers/net/wireless/b43/main.c
index 979e822..72321d8 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -3,7 +3,7 @@
   Broadcom B43 wireless driver
 
   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>