minigbm: msm: add supported formats

Since we should be using llvmpipe with MSM for now, add formats
we know work well with vgem (which also uses llvmpipe).

BUG=none
TEST=none

Change-Id: I88bf183a23a593029ed303c16ef960eb36d59f9f
Reviewed-on: https://chromium-review.googlesource.com/1194189
Commit-Ready: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
1 file changed