ath5k: add self to MAINTAINERS

I might as well be on the official list for ath5k.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

MAINTAINERS

@@ -738,6 +738,8 @@ P:	Nick Kossifidis
 M:	mickflemm@gmail.com
 P:	Luis R. Rodriguez
 M:	mcgrof@gmail.com
+P:	Bob Copeland
+M:	me@bobcopeland.com
 L:	linux-wireless@vger.kernel.org
 L:	ath5k-devel@lists.ath5k.org
 S:	Maintained