General usage for these hooks is documented in the README.md file. In
terms of implementation, To start with, we add a common file to ensure
that all required environment variables are set. Next, we add a console
script which calls labgrid-console. We also add a reset script that
behaves similarly. For writing files a wrapper around using
labgrid-client sd-mux is provided and then both Raspberry Pi an TI K3
platforms have writers provided. Sample board conf files can be found in
the bin/konsulko-labgrid directory.

Reviewed-by: Simon Glass <sjg@chromium.org>
Co-developed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Edi Feschiyan <edi.feschiyan@konsulko.com>