qcacmn: Add direct rx buffer changes for CFR requirements

CFR needs to correlate data received from direct dma ring and WMI event
for tx completion. These two events can come in any order. To facilitate
correlation CFR module has to hold on to the buffer until both events
are received and then replenish buffer back to direct dma ring. To
facilitate this requirement direct rx buf module is modified to change
callback return to bool to indicate whether buffer can be replenished
immediatley or not. Also add API to indiciate buffer release/replenish
later.

Change-Id: I40d3fdff82fd2828ada14b584da33a66052c6773
CRs-Fixed: 2403398

spectral/dispatcher/inc/wlan_spectral_utils_api.h

@@ -185,9 +185,9 @@ QDF_STATUS spectral_unregister_dbr(struct wlan_objmgr_pdev *pdev);
  *
  * API to handle spectral dbr event
  *
- * Return: status
+ * Return: true to release buf
  */
-int spectral_dbr_event_handler(struct wlan_objmgr_pdev *pdev,
-			       struct direct_buf_rx_data *payload);
+bool spectral_dbr_event_handler(struct wlan_objmgr_pdev *pdev,
+				struct direct_buf_rx_data *payload);
 #endif
 #endif /* _WLAN_SPECTRAL_UTILS_API_H_*/

spectral/dispatcher/src/wlan_spectral_utils_api.c

@@ -208,8 +208,8 @@ wlan_register_wmi_spectral_cmd_ops(struct wlan_objmgr_pdev *pdev,
 qdf_export_symbol(wlan_register_wmi_spectral_cmd_ops);
 
 #ifdef DIRECT_BUF_RX_ENABLE
-int spectral_dbr_event_handler(struct wlan_objmgr_pdev *pdev,
-			       struct direct_buf_rx_data *payload)
+bool spectral_dbr_event_handler(struct wlan_objmgr_pdev *pdev,
+				struct direct_buf_rx_data *payload)
 {
 	struct spectral_context *sc;
 
@@ -223,7 +223,9 @@ int spectral_dbr_event_handler(struct wlan_objmgr_pdev *pdev,
 		return -EINVAL;
 	}
 
-	return sc->sptrlc_process_spectral_report(pdev, payload);
+	sc->sptrlc_process_spectral_report(pdev, payload);
+
+	return true;
 }
 #endif