iwlwifi: document 4965 Tx scheduler

Document 4965 Tx scheduler

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 43ce645..e15986c 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -201,6 +201,8 @@
  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
  * queue (#4) for sending commands to the device firmware, and 15 other
  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
+ *
+ * See more detailed info in iwl-4965-hw.h.
  ***************************************************/
 
 static int iwl4965_queue_space(const struct iwl4965_queue *q)