[NET]: kernel-doc fixes

Fix kernel-doc omissions in net/:

Warning(linux-2.6.23-rc1//net/core/dev.c:2728): No description found for parameter 'addr'
Warning(linux-2.6.23-rc1//net/core/dev.c:2752): No description found for parameter 'addr'
Warning(linux-2.6.23-rc1//net/core/dev.c:3839): No description found for parameter 'net_dma'
Warning(linux-2.6.23-rc1//net/core/dev.c:3877): No description found for parameter 'state'

Signed-off-by: Randy Dunlap <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/core/dev.c

···
 /**
  *	dev_unicast_delete	- Release secondary unicast address.
  *	@dev: device
+ *	@addr: address to delete
+ *	@alen: length of @addr
  *
  *	Release reference to a secondary unicast address and remove it
- *	from the device if the reference count drop to zero.
+ *	from the device if the reference count drops to zero.
  *
  * 	The caller must hold the rtnl_mutex.
  */
···
 /**
  *	dev_unicast_add		- add a secondary unicast address
  *	@dev: device
+ *	@addr: address to delete
+ *	@alen: length of @addr
  *
  *	Add a secondary unicast address to the device or increase
  *	the reference count if it already exists.
···
 
 #ifdef CONFIG_NET_DMA
 /**
- * net_dma_rebalance -
- * This is called when the number of channels allocated to the net_dma_client
- * changes.  The net_dma_client tries to have one DMA channel per CPU.
+ * net_dma_rebalance - try to maintain one DMA channel per CPU
+ * @net_dma: DMA client and associated data (lock, channels, channel_mask)
+ *
+ * This is called when the number of channels allocated to the net_dma client
+ * changes.  The net_dma client tries to have one DMA channel per CPU.
  */
 
 static void net_dma_rebalance(struct net_dma *net_dma)
···
  * netdev_dma_event - event callback for the net_dma_client
  * @client: should always be net_dma_client
  * @chan: DMA channel for the event
- * @event: event type
+ * @state: DMA state to be handled
  */
 static enum dma_state_client
 netdev_dma_event(struct dma_client *client, struct dma_chan *chan,