drm/amdgpu: Add psp 11.0 support for navi10.

Add psp 11.0 code for navi10. psp 11.0 is not enabled for now.
Will enable it when psp 11.0 firmware is available.

Signed-off-by: Tao Zhou <Tao.Zhou1@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>