Fix test functions and data after moving hexify/unhexify out

- Separate string and hex parameter as unhexify is moved out of the function. It's input should only be hex.
- Fix test mbedtls_ccm_encrypt_and_tag that grows input message buffer with tag
- Add missing expected length parameter in ECP TLS tests
- Add deleted TEST_ASSERT and mbedtls calls that got removed in script based code generation

tests/suites/test_suite_debug.function

@@ -122,6 +122,7 @@ void mbedtls_debug_print_buf( char * file, int line, char * text,
 
     mbedtls_ssl_conf_dbg( &conf, string_debug, &buffer);
 
+    mbedtls_debug_print_buf( &ssl, 0, file, line, text, data, data_len );
 
     TEST_ASSERT( strcmp( buffer.buf, result_str ) == 0 );