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/mlx4/mr.c b/drivers/net/mlx4/mr.c
index 3dc69be..9c188bd 100644
--- a/drivers/net/mlx4/mr.c
+++ b/drivers/net/mlx4/mr.c
@@ -58,7 +58,7 @@
 	__be32 mtt_sz;
 	__be32 entity_size;
 	__be32 first_byte_offset;
-} __attribute__((packed));
+} __packed;
 
 #define MLX4_MPT_FLAG_SW_OWNS	    (0xfUL << 28)
 #define MLX4_MPT_FLAG_FREE	    (0x3UL << 28)