ath9k: Fix address management

Since both the arguments need to satisfy
the alignment requirements of ether_addr_copy(),
use memcpy() in cases where there will be no
big performance benefit and make sure that
ether_addr_copy() calls use properly aligned
arguments.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index e5ba6fa..9c56ecb 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -147,7 +147,7 @@
 	u16 cachelsz;
 	u16 curaid;
 	u8 macaddr[ETH_ALEN];
-	u8 curbssid[ETH_ALEN];
+	u8 curbssid[ETH_ALEN] __aligned(2);
 	u8 bssidmask[ETH_ALEN];
 
 	u32 rx_bufsize;