ath9k: Use common ath key management functions

Use key management functions which have been moved to ath/key.c and remove
ath9k copies of these functions and other now unused definitions.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index fd651d8..224df6d 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -381,7 +381,7 @@
 	 * reset the contents on initial power up.
 	 */
 	for (i = 0; i < common->keymax; i++)
-		ath9k_hw_keyreset(sc->sc_ah, (u16) i);
+		ath_hw_keyreset(common, (u16) i);
 
 	/*
 	 * Check whether the separate key cache entries