drivers: wifi: nrf71: Implement per-packet checksum indication

In the new design FW expects per-packet bitmap for checksum calcualtion
to be done.

Implement CAL-6810.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>

Author: krish2718

drivers/wifi/nrf71/osal/fw_if/umac_if/src/system/tx.c

@@ -680,6 +680,9 @@ static enum nrf_wifi_status tx_cmd_prep_callbk_fn(void *callbk_data,
 	config->tx_buff_info[frame_indx].ddr_ptr =
 		(unsigned long long)nwb_data;
 	config->tx_buff_info[frame_indx].pkt_length = buf_len;
+	if (!nrf_wifi_osal_nbuf_get_chksum_done(nbuf)) {
+		config->csum_bitmap |= (1u << frame_indx);
+	}
 	config->num_tx_pkts++;
 
 	status = NRF_WIFI_STATUS_SUCCESS;
@@ -835,6 +838,8 @@ static enum nrf_wifi_status tx_cmd_prepare(struct nrf_wifi_fmac_dev_ctx *fmac_de
 		config->mac_hdr_info.tx_flags |= NRF_WIFI_TX_FLAG_CHKSUM_AVAILABLE;
 	}
 
+	config->csum_bitmap = 0;
+
 #ifdef NRF_WIFI_QOS_NOACK_POLICY
 	if (has_matching_tid(txq, NRF_WIFI_QOS_NOACK_POLICY_TID)) {
 		config->mac_hdr_info.tx_flags |= NRF_WIFI_TX_FLAG_QOS_CTL_ACK_POLICY_NOACK;