drm-tests: create EGL Image backed by multiple memory planes

EGL_EXT_image_dma_buf_import allows EGL image backed by multiple memory planes.
NV12 and YVU420 (i.e. YV12) are the format with multiple planes. This CL makes
drm-tests cover those formats.

BUG=chromium:356871

Change-Id: I80afadda69156a57a6694ff96d4ed9750ac221f5
Reviewed-on: https://chromium-review.googlesource.com/470466
Commit-Ready: Dongseong Hwang <dongseong.hwang@intel.com>
Tested-by: Dongseong Hwang <dongseong.hwang@intel.com>
Reviewed-by: Dongseong Hwang <dongseong.hwang@intel.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
3 files changed