drivers/net: use __packed annotation

cleanup patch.

Use new __packed annotation in drivers/net/

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/iwmc3200wifi/iwm.h b/drivers/net/wireless/iwmc3200wifi/iwm.h
index 13266c3..51d7efa 100644
--- a/drivers/net/wireless/iwmc3200wifi/iwm.h
+++ b/drivers/net/wireless/iwmc3200wifi/iwm.h
@@ -162,7 +162,7 @@
 	u8 mac[ETH_ALEN];
 	u8 key_idx;
 	u8 multicast; /* BCast encrypt & BCast decrypt of frames FROM mac */
-} __attribute__ ((packed));
+} __packed;
 
 struct iwm_key {
 	struct iwm_umac_key_hdr hdr;