minigbm: add synaptics gbm driver

Change the ozone platform from cast to drm
add synaptics gbm driver for buffer management.

BUG=b:152384632
TEST=use chromecast ui to verify drm
TEST=use ozone_demo app to verify drm

Change-Id: I9dff03e6b522ee84e34cbbcb28a40ca7857c4168
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/2108458
Reviewed-by: Daniel Nicoara <dnicoara@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: Daniel Nicoara <dnicoara@chromium.org>
Commit-Queue: Daniel Nicoara <dnicoara@chromium.org>
3 files changed