qcacld-3.0: update rx nss per num_rf_chains

The host will update the rx nss after it gets the
rx nss info from the operating mode notification
IE. Currently, it does not check the num rf chains
of the dut. It causes the difference between
software and hardware.

Change-Id: I5d6852f8e2928cc99fc88ccface3bc4abe97f273
CRs-Fixed: 2280003

core/wma/src/wma_mgmt.c

@@ -3172,12 +3172,21 @@ void wma_process_update_opmode(tp_wma_handle wma_handle,
 void wma_process_update_rx_nss(tp_wma_handle wma_handle,
 			       tUpdateRxNss *update_rx_nss)
 {
+	struct target_psoc_info *tgt_hdl;
 	struct wma_txrx_node *intr =
 		&wma_handle->interfaces[update_rx_nss->smesessionId];
 	int rx_nss = update_rx_nss->rxNss;
+	int num_rf_chains;
 
-	if (rx_nss > WMA_MAX_NSS)
-		rx_nss = WMA_MAX_NSS;
+	tgt_hdl = wlan_psoc_get_tgt_if_handle(wma_handle->psoc);
+	if (!tgt_hdl) {
+		WMA_LOGE("%s: target psoc info is NULL", __func__);
+		return;
+	}
+
+	num_rf_chains = target_if_get_num_rf_chains(tgt_hdl);
+	if (rx_nss > num_rf_chains || rx_nss > WMA_MAX_NSS)
+		rx_nss = QDF_MIN(num_rf_chains, WMA_MAX_NSS);
 
 	intr->nss = (uint8_t)rx_nss;
 	update_rx_nss->rxNss = (uint32_t)rx_nss;