orion: fix the alignment related ath9k crash bug (#5815)

SVN-Revision: 19387

target/linux/orion/patches/300-skb_cb_align.patch

@@ -0,0 +1,11 @@
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -335,7 +335,7 @@ struct sk_buff {
+ 	 * want to keep them across layers you have to do a skb_clone()
+ 	 * first. This is owned by whoever has the skb queued ATM.
+ 	 */
+-	char			cb[48];
++	char			cb[48] __attribute__((aligned(8)));
+ #if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+ 	void			*cb_next;
+ #endif