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/usb/sierra_net.c b/drivers/net/usb/sierra_net.c
index f1942d6..ee85c8b 100644
--- a/drivers/net/usb/sierra_net.c
+++ b/drivers/net/usb/sierra_net.c
@@ -165,7 +165,7 @@
 	u8 gw_addr_len; /* NW-supplied GW address len */
 	u8 gw_addr[16]; /* NW-supplied GW address (bigendian) */
 	u8 reserved[8];
-} __attribute__ ((packed));
+} __packed;
 
 #define SIERRA_NET_LSI_COMMON_LEN      4
 #define SIERRA_NET_LSI_UMTS_LEN        (sizeof(struct lsi_umts))