qcacmn: Replace void pointers with appropriate/common structure types

Void pointer usage may lead to memory corruption due to
wrong pointer is typecasted. Hence define structure for all, and modules
internally typecasting based on their type

Change-Id: I6271ed8aa3f94254fd85f41962f23ea36895154e
CRs-Fixed: 2182452

target_if/direct_buf_rx/src/target_if_direct_buf_rx_main.c

@@ -1006,10 +1006,11 @@ QDF_STATUS target_if_direct_buf_rx_register_events(
 		return QDF_STATUS_E_INVAL;
 	}
 
-	ret = wmi_unified_register_event_handler(GET_WMI_HDL_FROM_PSOC(psoc),
-				wmi_dma_buf_release_event_id,
-				target_if_direct_buf_rx_rsp_event_handler,
-				WMI_RX_UMAC_CTX);
+	ret = wmi_unified_register_event_handler(
+			get_wmi_unified_hdl_from_psoc(psoc),
+			wmi_dma_buf_release_event_id,
+			target_if_direct_buf_rx_rsp_event_handler,
+			WMI_RX_UMAC_CTX);
 
 	if (ret)
 		direct_buf_rx_info("event handler not supported", ret);
@@ -1025,8 +1026,9 @@ QDF_STATUS target_if_direct_buf_rx_unregister_events(
 		return QDF_STATUS_E_INVAL;
 	}
 
-	wmi_unified_unregister_event_handler(GET_WMI_HDL_FROM_PSOC(psoc),
-					     wmi_dma_buf_release_event_id);
+	wmi_unified_unregister_event_handler(
+			get_wmi_unified_hdl_from_psoc(psoc),
+			wmi_dma_buf_release_event_id);
 
 	return QDF_STATUS_SUCCESS;
 }