minigbm: fix flags to align with GBM

For virtio, we can just forward use flags to host gbm. For that
to work, these flags must be aligned.

BUG=chromium:924405
TEST=compile

Change-Id: I64c03b4a374296a59749dccf65ab9ebeb59fc762
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/1804827
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
1 file changed