kingst-la2016: introduce base clock independent from max samplerate

kingst-la2016: introduce base clock independent from max samplerate

The LA1010 devices are said to use an 800MHz base clock to derive the
samplerate of up to 100MHz from. Add this information to the list of
known devices, and adjust the samplerate dividier code path.

Keep value 0 in that column for all devices where the base clock and the
maximum samplerate are identical. For awareness during maintenance. Make
the untypical devices stand out.