I git pulled, versioned to 19.07.1 and added a ramips device for a Trendnet TEW-810DR. This device is an exact clone of the D-Link DIR-810L. Trendnet's GPL source even contains an MTD6 partion labeled "MyDLink". It built without errors and installed using the instructions in the TEW-810DR/DIR-810L device pages.
I duplicated the git pull and generated my own local diff for my own future builds. I would like to submit to the project and need some spoon feeding advice on how to generate a diff against the current git snapshot.