esp32h2: add stub code for efuse/esp_gdbstub/esp_phy

Only stub code for these components:
 * efuse
 * esp_gdbstub
 * esp_phy

components/esp_phy/esp32h2/include/phy_init_data.h

@@ -0,0 +1,30 @@
+// Copyright 2016-2020 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef PHY_INIT_DATA_H
+#define PHY_INIT_DATA_H /* don't use #pragma once here, we compile this file sometimes */
+#include "esp_phy_init.h"
+#include "sdkconfig.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// ESP32H2-TODO: IDF-3398
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PHY_INIT_DATA_H */