drm/amdgpu: Extend full access wait time in guest

- Extend wait time and add retry, currently 6s * 2times
- Change timing algorithm

Signed-off-by: Victor Zhao <Victor.Zhao@amd.com>
Signed-off-by: Peng Ju Zhou <PengJu.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Victor Zhao 2021-05-06 17:30:41 +08:00 • committed by Alex Deucher
commit 124e8b1990