amdgpu: treat BO_USE_LINEAR as an HW flag

sommelier makes VIRTWL_IOCTL_NEW_DMABUF requests for 2D apps.  crosvm's
virtio-wl allocates linear BOs in response and expects them to be
presentable.

BUG=b:273797429
TEST=xeyes and gedit in crostini

Change-Id: Id5a955e5c22342ee11e9e333720eb95ac08fd175
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/4343374
Tested-by: Chia-I Wu <[email protected]>
Reviewed-by: Yiwei Zhang <[email protected]>
Commit-Queue: Chia-I Wu <[email protected]>
1 file changed