fix(esp_netif): move endian.h to linux component, fix macOS build

Co-authored-by: Radek Tandler <radek.tandler@espressif.com>

components/linux/include/machine/endian.h

@@ -0,0 +1,11 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+#if __APPLE__
+#include_next <machine/endian.h>
+#else
+#include <endian.h>
+#endif