ath9k: Remove duplicate variables

A few variables (bssid, bssidmask, curaid) were duplicated in
struct ath_softc and in ath_hal, remove them.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/recv.c b/drivers/net/wireless/ath9k/recv.c
index e8e4a32..c51c085 100644
--- a/drivers/net/wireless/ath9k/recv.c
+++ b/drivers/net/wireless/ath9k/recv.c
@@ -242,13 +242,13 @@
 
 	/* configure bssid mask */
 	if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
-		ath9k_hw_setbssidmask(ah, sc->bssidmask);
+		ath9k_hw_setbssidmask(sc);
 
 	/* configure operational mode */
 	ath9k_hw_setopmode(ah);
 
 	/* Handle any link-level address change. */
-	ath9k_hw_setmac(ah, sc->macaddr);
+	ath9k_hw_setmac(ah, sc->sc_ah->macaddr);
 
 	/* calculate and install multicast filter */
 	mfilt[0] = mfilt[1] = ~0;