am 9c842adc: Add support for IEEE 802.c stylc CRC32 computation to the sparse image tools

Merge commit '9c842adc177c1bcd22c2038d8d237bfb70654dca'

* commit '9c842adc177c1bcd22c2038d8d237bfb70654dca':
  Add support for IEEE 802.c stylc CRC32 computation to the sparse image tools