lisa/_assets/kmodules/lisa: Support in-tree builds
Created by: mrkajetanp
FEATURE
Modify the Makefile for the lisa module to distinguish between in-tree and out-of-tree building. Adjust the imports and definitions in the source files accordingly.
With this change, the module can now be copy-pasted into a kernel tree and built with kbuild like any other kernel module. The default, out-of-tree build method with Lisa should work unchanged as before.