Driver for Microinfinity CruizCore XG1300L

Tested and working.

The only drawback is that it has to be called manually (doesn't follow LEGO recommendations)

I will try to locate some other information in i2cdump that could help identify it.

RESET was also implemented as a mode - it changes scaling factor for accelerometer back to 2G.
This was undocummented by the manufacturer.
explain what "g" is here.