[meta-xilinx] Overwriting kmeta-based config options in own layer

[Andreas Galauner]

Hi,
I have my own project-specific layer on top of meta-xilinx with my own
kernel recipes based on the ones in meta-xilinx. I basically copied
everything (recipes and the kmeta config directories) and changed all
the names, but it's a nightmare to maintain on a regular basis.

Does anybody of you guys have an example recipe how I can overwrite
specific config options in the kmeta folders for my own kernel builds in
my overlay but inherit all the rest of the configured kernel config
options from meta xilinx?

Can I just add another kmeta-directory to the SRC_URI and create my own
machine in these directories and specify it using the KMACHINE variable
in my recipe?
Anybody here who has experience with this? Is this even advisable to do
so or are there better ways?

Thanks,
- Andy