kingst-la2016: rephrase magic bytes in table of known models

kingst-la2016: rephrase magic bytes in table of known models

Prefer the hex presentation for magic bytes retrieved from EEPROM to
identify Kingst LA models. Adjust the models[] array and diagnostics.
As a byproduct this keeps the table layout stable in future versions.

[ See a word-diff for the essence of the change. ]