restore internal comment in cipher.h due to LTS
Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
diff --git a/include/mbedtls/cipher.h b/include/mbedtls/cipher.h
index 784b4e3..fa57efe 100644
--- a/include/mbedtls/cipher.h
+++ b/include/mbedtls/cipher.h
@@ -476,6 +476,10 @@
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_ALLOC_FAILED if allocation of the
* cipher-specific context fails.
+ *
+ * \internal Currently, the function also clears the structure.
+ * In future versions, the caller will be required to call
+ * mbedtls_cipher_init() on the structure first.
*/
int mbedtls_cipher_setup(mbedtls_cipher_context_t *ctx,
const mbedtls_cipher_info_t *cipher_info);