qcacmn: Add DFS Radar Event Notifications

Add event notifications to userspace
    1. Radar Detect
    2. CAC Start
    3. CAC Complete
    4. NOL Start
    5. NOL Complete

CRs-Fixed: 2448199
Change-Id: I5deaa53c922fe4e149e7198b287e31d3876d49d4

umac/dfs/dispatcher/inc/wlan_dfs_ioctl.h

@@ -252,4 +252,23 @@ struct wlan_dfs_phyerr_param {
 	bool       pe_enmaxrssi;
 };
 
+/**
+ * enum WLAN_DFS_EVENTS - DFS Events that will be sent to userspace
+ * @WLAN_EV_RADAR_DETECTED: Radar is detected
+ * @WLAN_EV_CAC_STARTED:    CAC timer has started
+ * @WLAN_EV_CAC_COMPLETED:  CAC timer completed
+ * @WLAN_EV_NOL_STARTED:    NOL started
+ * @WLAN_EV_NOL_FINISHED:   NOL Completed
+ *
+ * DFS events such as radar detected, CAC started,
+ * CAC completed, NOL started, NOL finished
+ */
+enum WLAN_DFS_EVENTS {
+	WLAN_EV_RADAR_DETECTED,
+	WLAN_EV_CAC_STARTED,
+	WLAN_EV_CAC_COMPLETED,
+	WLAN_EV_NOL_STARTED,
+	WLAN_EV_NOL_FINISHED,
+};
+
 #endif  /* _DFS_IOCTL_H_ */