This tidies up ddbridge.h from all functions (especially those carrying
comparably complex code) and moves them into ddbridge-io.c/h.
Added benefit: ddbridge and octonet build is now free from warnings.
Moves everything ddb_regset / ddb_regmap / ddb_info related (which is
used to gather all information required for every piece of supported
hardware) out from ddbridge-main, ddbridge-core and octonet-core into
ddbridge-hw, which then in turn only requires annotations on all
ddb_info structs, and doesn't need to export regsets, regmaps et al.,
thus reducing clutter.
This changes building ddbridge.ko and octonet.ko from including multiple
C files right from the source code to building all of them separately
into their own objects, and build the actual kernel module from these
objects.
Accomplished by:
- rename of ddbridge.c to ddbridge-main.c and octonet. to octonet-main.c
- rename of ddbridge-mod.c to ddbridge-modulator.c
- add all C files to Kbuild and prepare Kbuild for this way of building
the modules
- add all neccessary annotations and includes
