ath9k: Update maintainers for ath9k

This has been the case really, we just forgot to update it.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

MAINTAINERS

@@ -888,6 +888,12 @@ P:	Luis R. Rodriguez
 M:	lrodriguez@atheros.com
 P:	Jouni Malinen
 M:	jmalinen@atheros.com
+P:	Sujith Manoharan
+M:	Sujith.Manoharan@atheros.com
+P:	Vasanthakumar Thiagarajan
+M:	vasanth@atheros.com
+P:	Senthil Balasubramanian
+M:	senthilkumar@atheros.com
 L:	linux-wireless@vger.kernel.org
 L:	ath9k-devel@lists.ath9k.org
 S:	Supported