net: use __packed annotation

cleanup patch.

Use new __packed annotation in net/ and include/
(except netfilter)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/compat.c b/net/compat.c
index ec24d9e..1cf7590 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -531,7 +531,7 @@
 	__u32				 gr_interface;
 	struct __kernel_sockaddr_storage gr_group
 		__attribute__ ((aligned(4)));
-} __attribute__ ((packed));
+} __packed;
 
 struct compat_group_source_req {
 	__u32				 gsr_interface;
@@ -539,7 +539,7 @@
 		__attribute__ ((aligned(4)));
 	struct __kernel_sockaddr_storage gsr_source
 		__attribute__ ((aligned(4)));
-} __attribute__ ((packed));
+} __packed;
 
 struct compat_group_filter {
 	__u32				 gf_interface;
@@ -549,7 +549,7 @@
 	__u32				 gf_numsrc;
 	struct __kernel_sockaddr_storage gf_slist[1]
 		__attribute__ ((aligned(4)));
-} __attribute__ ((packed));
+} __packed;
 
 #define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
 			sizeof(struct __kernel_sockaddr_storage))