ath5k: use ath_hw_setbssidmask() for bssid mask setting upon assoc

This should avoid future typos.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath5k/pcu.c b/drivers/net/wireless/ath/ath5k/pcu.c
index 0385e80..32fd5f8 100644
--- a/drivers/net/wireless/ath/ath5k/pcu.c
+++ b/drivers/net/wireless/ath/ath5k/pcu.c
@@ -288,13 +288,8 @@
 	/*
 	 * Set simple BSSID mask on 5212
 	 */
-	if (ah->ah_version == AR5K_AR5212) {
-		ath5k_hw_reg_write(ah, get_unaligned_le32(common->bssidmask),
-				   AR_BSSMSKL);
-		ath5k_hw_reg_write(ah,
-				   get_unaligned_le16(common->bssidmask + 4),
-				   AR_BSSMSKU);
-	}
+	if (ah->ah_version == AR5K_AR5212)
+		ath_hw_setbssidmask(common);
 
 	/*
 	 * Set BSSID which triggers the "SME Join" operation