Mender integration of STM32MP157C on dunfell

Kind of not really, I got the whole thing to build but I got stuck on creating the final gpt image with WIC, it kept crashing for me. I’m still working on it but I am focused on another higher priority project right now. Once I complete it I’ll be back to working on the Yocto port. We are also working on getting it to work with the Octavo based SIP but, the DK2 and the Seed SoM. I can give the specific build issues I am having if you think you can help fix them.