vadumpcaps: Force the use of DRM.

This CL forces the vadumpcaps ebuild to use DRM because we don't ever
use VA-API over X11 or Wayland on Chrome OS. This is a cleanup to make
it possible for the libva uprev to also not involve IUSE flags that we
don't care about.

BUG=b:159825228
TEST=emerge-eve media-gfx/vadumpcaps

Cq-Depend: chromium:2276738
Change-Id: Ib91ff35849a12ccdd49a58533ac9deb75301e819
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2275495
Tested-by: Andres Calderon Jaramillo <andrescj@chromium.org>
Commit-Queue: Andres Calderon Jaramillo <andrescj@chromium.org>
Reviewed-by: Miguel Casas <mcasas@chromium.org>
2 files changed