feat(storage/vfs): make part of nullfs API private

components/esp_vfs_console/vfs_console.c

@@ -16,6 +16,7 @@
 #include "sdkconfig.h"
 #include "esp_private/startup_internal.h"
 #include "esp_vfs_null.h"
+#include "esp_private/nullfs.h"
 
 #define STRINGIFY(s) STRINGIFY2(s)
 #define STRINGIFY2(s) #s

components/vfs/include/esp_private/nullfs.h

@@ -0,0 +1,24 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include "esp_vfs.h"
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Get VFS structure for /dev/null
+ *
+ * @return VFS structure for /dev/null
+ */
+const esp_vfs_t *esp_vfs_null_get_vfs(void);
+
+#ifdef __cplusplus
+}
+#endif

components/vfs/include/esp_vfs_null.h

@@ -12,13 +12,6 @@
 extern "C" {
 #endif
 
-/**
- * @brief Get VFS structure for /dev/null
- *
- * @return VFS structure for /dev/null
- */
-const esp_vfs_t *esp_vfs_null_get_vfs(void);
-
 /**
  * @brief Register filesystem for /dev/null
  *