net: remove last uses of __attribute__((packed))

Network code uses the __packed macro instead of __attribute__((packed)).

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 7f256e2..23e46ce 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -412,7 +412,7 @@
 	s8 idx;
 	u8 count;
 	u8 flags;
-} __attribute__((packed));
+} __packed;
 
 /**
  * struct ieee80211_tx_info - skb transmit information