Add missing kernel-doc notation to sk_buff:
Warning(linux-2.6.27-rc1-git2//include/linux/skbuff.h:345): No description found for parameter 'do_not_encrypt'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
  *     @tc_index: Traffic control index
  *     @tc_verd: traffic control verdict
  *     @ndisc_nodetype: router type (from link layer)
+ *     @do_not_encrypt: set to prevent encryption of this frame
  *     @dma_cookie: a cookie to one of several possible DMA operations
  *             done by skb DMA functions
  *     @secmark: security marking