Usage is documented in README and an example, local-example.json is
included.
Also clean up the parameter to loadconfig() as its actually not needed.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
We want to be able to use data expansion/variable substitution
in most variables so convert to use the utils API for this.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>