[WHY] New minor revision needs to be handled [HOW] Add switch case and assert to catch missing switch cases in the future Signed-off-by: Michael Strauss <michael.strauss@amd.com> Reviewed-by: Eric Yang <eric.yang2@amd.com> Acked-by: Wayne Lin <waynelin@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>