minigbm: Set modifiers for amdgpu/dri.

minigbm: Set modifiers for amdgpu/dri.

I tried kernel with modifier support and userspace without and it
failed due to having a linear (which is 0) modifier for the tiled
textures. Set the modifier explicitly.

BUG=b:144023522
TEST=Chrome shows the login screen on zork (with some other bugfixes)

Change-Id: I806d3bb744e52d094e5b852679057cea3f0bcad0
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/2043848
Tested-by: Bas Nieuwenhuizen <basni@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Commit-Queue: Bas Nieuwenhuizen <basni@chromium.org>