K 10
svn:author
V 3
avg
K 8
svn:date
V 27
2020-08-12T09:07:07.605828Z
K 7
svn:log
V 734
cp2112: a number of cleanups and improvements

- hoist all request / response structures from function level to top level
- replace magic numeric literals with constants
- regroup types, data and functions
- remove setting of the id field in responses as they are completely
  overwritten with data from the device
- centralize setting of the id field as it is always set to the value of
  request type
- fix setting and querying of open-drain vs push-pull configuration of
  an output pin -- it's always in one of those configurations
- detect special pin configurations: a pin in a special configuration is
  neither general purpose input or output
- there is still no support for setting special configurations

MFC after:	2 weeks

END