libertas: fix memory alignment problems on the blackfin

Fixing unaligned memory access on the blackfin architecture (maybe on the
ARM also).

Signed-off-by: Ihar Hrachyshka <ihar.hrachyshka@promwad.com>
Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h
index 58d7ef6..5a69f2b 100644
--- a/drivers/net/wireless/libertas/dev.h
+++ b/drivers/net/wireless/libertas/dev.h
@@ -349,7 +349,7 @@
 	u8 channel;
 	u8 band;
 	u8 mode;
-	u8 bssid[ETH_ALEN];
+	u8 bssid[ETH_ALEN] __attribute__ ((aligned (2)));
 
 	/** WEP keys */
 	struct enc_key wep_keys[4];