newlib: dirent d_ino type fix

As per the posix spec, `d_ino` should be defined as `ino_t`. See the
reference:
http://pubs.opengroup.org/onlinepubs/7908799/xsh/dirent.h.html.

components/newlib/platform_include/sys/dirent.h

@@ -1,21 +1,14 @@
-// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+/*
-//
+ * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
-// Licensed under the Apache License, Version 2.0 (the "License");
+ *
-// you may not use this file except in compliance with the License.
+ * SPDX-License-Identifier: Apache-2.0
-// 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.
 
 #pragma once
 
 #include <stddef.h>
 #include <stdint.h>
+#include <sys/types.h>
 
 /**
  * This header file provides POSIX-compatible definitions of directory
@@ -42,7 +35,7 @@ typedef struct {
  * @brief Directory entry structure
  */
 struct dirent {
-    int d_ino;          /*!< file number */
+    ino_t d_ino;          /*!< file number */
     uint8_t d_type;     /*!< not defined in POSIX, but present in BSD and Linux */
 #define DT_UNKNOWN  0
 #define DT_REG      1