Deprecate mbedtls_cipher_auth_xxcrypt()

This temporarily breaks all.sh '*deprecated*' (deprecated functions still used
in the library), which will be fix in the next commit.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/library/cipher.c b/library/cipher.c
index 47dafa4..44cba34 100644
--- a/library/cipher.c
+++ b/library/cipher.c
@@ -1469,6 +1469,7 @@
     return( MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE );
 }
 
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
 /*
  * Packet-oriented encryption for AEAD modes: public function.
  */
@@ -1536,6 +1537,7 @@
                                          input, ilen, output, olen,
                                          tag, tag_len ) );
 }
+#endif /* !MBEDTLS_DEPRECATED_REMOVED */
 #endif /* MBEDTLS_CIPHER_MODE_AEAD */
 
 #if defined(MBEDTLS_CIPHER_MODE_AEAD) || defined(MBEDTLS_NIST_KW_C)