qcacmn: Fix wrong rssi in monitor mode

If ppdu rssi unit is dbm, need convert to db for API:
qdf_nbuf_update_radiotap, only need convert once for first mdpu in the
ppdu. if convert for each mpdu, wrong rssi will be saved.

Change-Id: I85e92121ddb289e3513022ff092083825197efb4
CRs-Fixed: 3057041

qdf/linux/src/qdf_nbuf.c

@@ -4630,6 +4630,14 @@ static unsigned int qdf_nbuf_update_radiotap_ampdu_flags(
 	return rtap_len;
 }
 
+#ifdef DP_MON_RSSI_IN_DBM
+#define QDF_MON_STATUS_GET_RSSI_IN_DBM(rx_status) \
+(rx_status->rssi_comb)
+#else
+#define QDF_MON_STATUS_GET_RSSI_IN_DBM(rx_status) \
+(rx_status->rssi_comb + rx_status->chan_noise_floor)
+#endif
+
 /**
  * qdf_nbuf_update_radiotap() - Update radiotap header from rx_status
  * @rx_status: Pointer to rx_status.
@@ -4705,7 +4713,7 @@ unsigned int qdf_nbuf_update_radiotap(struct mon_rx_status *rx_status,
 	 * rssi_comb is int dB, need to convert it to dBm.
 	 * normalize value to noise floor of -96 dBm
 	 */
-	rtap_buf[rtap_len] = rx_status->rssi_comb + rx_status->chan_noise_floor;
+	rtap_buf[rtap_len] = QDF_MON_STATUS_GET_RSSI_IN_DBM(rx_status);
 	rtap_len += 1;
 
 	/* RX signal noise floor */