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/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index 1fc0871..e75f1a8 100644
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -197,7 +197,7 @@
 };
 
 /* Main message type used between library and application */
-struct __attribute__ ((packed)) ems_cpc_msg {
+struct __packed ems_cpc_msg {
 	u8 type;	/* type of message */
 	u8 length;	/* length of data within union 'msg' */
 	u8 msgid;	/* confirmation handle */