qcacmn: Request and process Beacon stats from FW

Request and process  Beacon frames from FW using WMI command and event.
WMI_HOST_REQUEST_BCN_STAT is for beacon stats request and event processing.

Change-Id: I99250384868d62089a0f7d2acf94dd6e29ef67b9
CRs-Fixed: 2139393

wmi_unified_priv.h

@@ -1276,6 +1276,9 @@ QDF_STATUS (*extract_atf_token_info_ev)(wmi_unified_t wmi_handle,
 QDF_STATUS (*extract_vdev_extd_stats)(wmi_unified_t wmi_handle, void *evt_buf,
 		uint32_t index, wmi_host_vdev_extd_stats *vdev_extd_stats);
 
+QDF_STATUS (*extract_bcn_stats)(wmi_unified_t wmi_handle, void *evt_buf,
+		uint32_t index, wmi_host_bcn_stats *bcn_stats);
+
 QDF_STATUS (*send_power_dbg_cmd)(wmi_unified_t wmi_handle,
 				struct wmi_power_dbg_params *param);