drm/amd/display: [FW Promotion] Release 1.0.18

[Header Changes]
- Update scratch information for boot status

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>