feat(mbedtls): adds support for RSA decryption with DS peripheral

components/mbedtls/port/include/rsa_dec_alt.h

@@ -0,0 +1,21 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#ifdef __cpluscplus
+extern "C" {
+#endif
+
+#include "sdkconfig.h"
+
+#if defined(CONFIG_SOC_DIG_SIGN_SUPPORTED)
+#include "esp_ds/esp_ds_rsa.h"
+#endif
+
+#ifdef __cpluscplus
+}
+#endif