p54: update MAINTAINERS

Michael has been out of the scene for a while now,
but despite Michael's absence, p54 is still maintained.

Cc: Michael Wu <aluminum.tape@gmail.com>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: NChristian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

MAINTAINERS

@@ -4235,10 +4235,9 @@ F:	include/scsi/osd_*
 F:	fs/exofs/
 
 P54 WIRELESS DRIVER
-M:	Michael Wu <flamingice@sourmilk.net>
+M:	Christian Lamparter <chunkeey@googlemail.com>
 L:	linux-wireless@vger.kernel.org
-W:	http://prism54.org
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mwu/mac80211-drivers.git
+W:	http://wireless.kernel.org/en/users/Drivers/p54
 S:	Maintained
 F:	drivers/net/wireless/p54/