74f0ff369f
MES is an important firmware that lacks some essential documentation. This commit introduces an overview of it and how it works. Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>