feat(partition_table): Add read-only partition flag and functionality

components/nvs_flash/src/nvs_partition.cpp

@@ -1,16 +1,8 @@
-// Copyright 2019 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.
+/*
+ * SPDX-FileCopyrightText: 2019-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #include <cstdlib>
 #include "nvs_partition.hpp"
@@ -74,4 +66,9 @@ uint32_t NVSPartition::get_size()
     return mESPPartition->size;
 }
 
+bool NVSPartition::get_readonly()
+{
+    return mESPPartition->readonly;
+}
+
 } // nvs