qcacld-3.0: Enable Napier monitor mode configuration

Host is required to send HTT messages to firmware to configure
and enable monitor mode. The HTT message requests the firmware
to subscribe the TLVs, packet types and also monitor mode type.

CRs-Fixed: 2071621
Change-Id: If2da5de01f3a7eb594e25b421bc17f97498c8a92
diff --git a/core/hdd/src/wlan_hdd_rx_monitor.h b/core/hdd/src/wlan_hdd_rx_monitor.h
index 161b8a1..415b523 100644
--- a/core/hdd/src/wlan_hdd_rx_monitor.h
+++ b/core/hdd/src/wlan_hdd_rx_monitor.h
@@ -37,12 +37,18 @@
 void hdd_rx_monitor_callback(ol_osif_vdev_handle vdev,
 				qdf_nbuf_t mpdu,
 				void *rx_status);
+
+int hdd_enable_monitor_mode(struct net_device *dev);
 #else
-static void hdd_monitor_set_rx_monitor_cb(struct ol_txrx_ops *txrx,
+static inline void hdd_monitor_set_rx_monitor_cb(struct ol_txrx_ops *txrx,
 					ol_txrx_rx_mon_fp rx_monitor_cb){ }
-static void hdd_rx_monitor_callback(ol_osif_vdev_handle vdev,
+static inline void hdd_rx_monitor_callback(ol_osif_vdev_handle vdev,
 				qdf_nbuf_t mpdu,
 				void *rx_status){ }
+static inline int hdd_enable_monitor_mode(struct net_device *dev)
+{
+	return -ENOSYS;
+}
 #endif /* CONFIG_LITHIUM */
 
 #endif /* __WLAN_HDD_RX_MONITOR_H */