Adding new defconfig for kernel build

I need to enable touch driver in vim2 kernel. I created new defconfig with touch driver enabled . But I don’t know how to add this new defconfig to android build. Please help me.

I think you can just replace the defconfig file at the path:

I have already put my new defconfig to your mentioned folder. But how to build with android build

I think you missed the Khadas Docs:
http://docs.khadas.com/develop/BuildAndroid/