qcacmn: Set the Tx completion ring size to appropriate value

Size the completion ring using following 2 parameters
 - NAPI schedule latency (assuming 1 netdev, gmac, competing for CPU) = 20ms
								 (2 jiffies)
 - Worst case PPS requirement = 400K PPS
    Ring size = 20 * 400 = 8000

Change-Id: Iaac0b61f50b52a4e824c3c8ef5d980adf455854c
CRs-Fixed: 2068155

wlan_cfg/wlan_cfg.h

@@ -473,4 +473,20 @@ int wlan_cfg_get_int_batch_threshold_other(struct wlan_cfg_dp_soc_ctxt *cfg);
  * Return: Timer threshold
  */
 int wlan_cfg_get_int_timer_threshold_other(struct wlan_cfg_dp_soc_ctxt *cfg);
+
+/*
+ * wlan_cfg_tx_ring_size - Get Tx DMA ring size (TCL Data Ring)
+ * @wlan_cfg_soc_ctx
+ *
+ * Return: Tx Ring Size
+ */
+int wlan_cfg_tx_ring_size(struct wlan_cfg_dp_soc_ctxt *cfg);
+
+/*
+ * wlan_cfg_tx_comp_ring_size - Get Tx completion ring size (WBM Ring)
+ * @wlan_cfg_soc_ctx
+ *
+ * Return: Tx Completion ring size
+ */
+int wlan_cfg_tx_comp_ring_size(struct wlan_cfg_dp_soc_ctxt *cfg);
 #endif