feat: add convertdevice xCANFD config info

[ConvertDevice]

this pr dosn't contains actual funtional commit, just provide an open source hardware for debug easily.

[marckleinebudde]

Looks good to me!

[marckleinebudde]

@ConvertDevice can you rebase, then @fenugrec can merge this

[fenugrec]

you just merged master back into your tree... that is not a rebase, and only makes things more complicated for me.

next time,

• always work on a branch, not master
• don't merge back and forth between upstream and your stuff
• when asked to rebase, rebase and solve conflicts if needed

[fenugrec]

rebased and merged in 4dc288d1744166e66ed72e95257524846d9b2b02