Add declaration and dummy-definition of mbedtls_cipher_setup_psa()
diff --git a/include/mbedtls/cipher.h b/include/mbedtls/cipher.h
index 5051c12..e7e222c 100644
--- a/include/mbedtls/cipher.h
+++ b/include/mbedtls/cipher.h
@@ -413,6 +413,26 @@
int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx,
const mbedtls_cipher_info_t *cipher_info );
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+/**
+ * \brief This function initializes a cipher context for
+ * PSA-based use with the given cipher primitive.
+ *
+ * \note See #MBEDTLS_USE_PSA_CRYPTO for information on PSA.
+ *
+ * \param ctx The context to initialize. May not be \c NULL.
+ * \param cipher_info The cipher to use.
+ *
+ * \return \c 0 on success.
+ * \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
+ * parameter-verification failure.
+ * \return #MBEDTLS_ERR_CIPHER_ALLOC_FAILED if allocation of the
+ * cipher-specific context fails.
+ */
+int mbedtls_cipher_setup_psa( mbedtls_cipher_context_t *ctx,
+ const mbedtls_cipher_info_t *cipher_info );
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
+
/**
* \brief This function returns the block size of the given cipher.
*