Convert the hexadecimal string in to C-style string.

def bytes_to_c_string(data):
    """
    Convert the hexadecimal string in to C-style string.
    """
    rows = chunked_join(data, 20, 2, '"\n    "', '', r'\x' + X)
    logging.debug(_('Returning rows: %s'), rows)
    return '"{}";'.format(rows)