iwl3945: kill iwl3945_rx_queue_restock

This patch kills iwl3945_rx_queue_restock function on prise of new
hw_params.rx_wrt_ptr_reg which holds per NIC RX write pointer register.

Signed-off-by: Tomas Winkler <tomas.winkler@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/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index a092401..fbc4822 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -563,6 +563,7 @@
  * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
  * @max_rxq_log: Log-base-2 of max_rxq_size
  * @rx_buf_size: Rx buffer size
+ * @rx_wrt_ptr_reg: FH{39}_RSCSR_CHNL0_WPTR
  * @max_stations:
  * @bcast_sta_id:
  * @fat_channel: is 40MHz width possible in band 2.4
@@ -584,6 +585,7 @@
 	u16 max_rxq_size;
 	u16 max_rxq_log;
 	u32 rx_buf_size;
+	u32 rx_wrt_ptr_reg;
 	u32 max_pkt_size;
 	u8  max_stations;
 	u8  bcast_sta_id;