qcacmn: Add APIs to configure Active BPF Mode

Active Mode Berkeley Packet Filter (Active BPF) is a new feature that
allows firmware to apply BPF even while the Apps processor is active.
There are 3 modes:
 * Disabled: do not apply BPF in active mode
 * Enabled: apply BPF to all packets in active mode
 * Adaptive: apply BPF up to some threshold to avoid performance impact

Add WMI APIs and related logic to support configuration of Active BPF
Mode.

Change-Id: I8c0778b3fa73d148422aa103b0fc0950433fec95
CRs-Fixed: 1111400

wmi/src/wmi_unified_api.c

@@ -3229,6 +3229,23 @@ QDF_STATUS wmi_unified_get_buf_extscan_hotlist_cmd(void *wmi_hdl,
 	return QDF_STATUS_E_FAILURE;
 }
 
+QDF_STATUS wmi_unified_set_active_bpf_mode_cmd(void *wmi_hdl,
+				uint8_t vdev_id,
+				enum wmi_host_active_bpf_mode ucast_mode,
+				enum wmi_host_active_bpf_mode mcast_bcast_mode)
+{
+	wmi_unified_t wmi = (wmi_unified_t)wmi_hdl;
+
+	if (!wmi->ops->send_set_active_bpf_mode_cmd) {
+		WMI_LOGI("send_set_active_bpf_mode_cmd op is NULL");
+		return QDF_STATUS_E_FAILURE;
+	}
+
+	return wmi->ops->send_set_active_bpf_mode_cmd(wmi, vdev_id,
+						      ucast_mode,
+						      mcast_bcast_mode);
+}
+
 /**
  *  wmi_unified_pdev_get_tpc_config_cmd_send() - WMI get tpc config function
  *  @param wmi_handle      : handle to WMI.