Canvas 4 Device tree
Add this to your source code/device to setup vendor files run ./setup-makefiles.sh after that you need to get proprietory files from your device execute the ./extract-files.sh with your device connected and USB Debugging on then lunch your device by typing "lunch cm_a210-userdebug" at the root of your source folder after initialising the environment then type make bacon. this should give you the zip file.
Have fun