bugfix: fix dump_dlsch2
the argument 'coded_bits_per_codeword' has to be an array in case of several codewords. The calling sites have been adapted. Today, only the first index is used, so calling sites where 'coded_bits_per_codeword' is an integer pass the address of it. It is expected that 'dump_dlsch2' will check in the future that there is one or two codewords and only access 'coded_bits_per_codeword' when it's sure there are really two codewords.