firmware: scmi: fake base protocol commands on sandbox

This is a simple implementation of SCMI base protocol for sandbox.
The main use is in SCMI unit test.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
1 file changed