feat(vad): lp vad driver and wakeup feature

components/esp_driver_i2s/include/esp_private/lp_i2s_private.h

@@ -0,0 +1,27 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include "hal/lp_i2s_hal.h"
+#include "driver/i2s_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Get LP I2S soc handle
+ *
+ * @param[in] chan  LP I2S channel handle
+ *
+ * @return LP I2S soc handle
+ */
+lp_i2s_soc_handle_t lp_i2s_get_soc_handle(lp_i2s_chan_handle_t chan);
+
+#ifdef __cplusplus
+}
+#endif