change(ldo): do vddpst ldo init in early stage

components/esp_hw_support/include/esp_private/esp_ldo.h

@@ -44,7 +44,7 @@ typedef struct {
 } esp_ldo_unit_init_cfg_t;
 
 /**
- * @Brief Init a LDO during early stage
+ * @brief Init a LDO during early stage
  *
  * @note This API is only for early stage usage
  *

components/esp_hw_support/include/esp_private/esp_ldo_psram.h

@@ -0,0 +1,22 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Init PSRAM VDD LDO during early stage
+ */
+void esp_ldo_vdd_psram_early_init(void);
+
+#ifdef __cplusplus
+}
+#endif