drm/amdgpu: use rlc toc from psp sos binary

Instead of putting toc into driver source code, the toc will
be part of psp_sos fw. Driver need to get and parse it from
psp fw

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Le Ma <Le.Ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>