iwlwifi: Fix byte count table for fragmented packets

This patch fix byte count table update. Table must be updated for each
fragment

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index 889fdba..23c21e3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -89,6 +89,10 @@
 struct iwl_lib_ops {
 	/* iwlwifi driver (priv) init */
 	int (*init_drv)(struct iwl_priv *priv);
+
+	void (*txq_update_byte_cnt_tbl)(struct iwl_priv *priv,
+					struct iwl4965_tx_queue *txq,
+					u16 byte_cnt);
 	/* nic init */
 	int (*hw_nic_init)(struct iwl_priv *priv);
 	/* alive notification */