rc80211-pid: add MAINTAINERS entry

Add an entry in MAINTAINERS for rc80211-pid.

Cc: Mattias Nissler <mattias.nissler@gmx.de>
Signed-off-by: NStefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -2491,6 +2491,16 @@ W:	http://linuxwireless.org/
 T:	git kernel.org:/pub/scm/linux/kernel/git/linville/wireless-2.6.git
 S:	Maintained
 
+MAC80211 PID RATE CONTROL
+P:	Stefano Brivio
+M:	stefano.brivio@polimi.it
+P:	Mattias Nissler
+M:	mattias.nissler@gmx.de
+L:	linux-wireless@vger.kernel.org
+W:	http://linuxwireless.org/en/developers/Documentation/mac80211/RateControl/PID
+T:	git kernel.org:/pub/scm/linux/kernel/git/linville/wireless-2.6.git
+S:	Maintained
+
 MACVLAN DRIVER
 P:	Patrick McHardy
 M:	kaber@trash.net