minigbm/msm: Correct NV12 UBWC buffer allocation
V4L2 is the consumer of these buffers and sets up
the allocation in get_framesize_raw_nv12_ubwc().
There was a mismatch where V4L2 was aligning the
uv buffer differently than minigbm.
BUG=b:
166157708
TEST=video_decode_accelerator_tests with 856x480 video
Change-Id: Idb9fb689a56639dbc73753d453e7e6e5daeb6700
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/
2402146
Tested-by: Fritz Koenig <frkoenig@chromium.org>
Commit-Queue: Fritz Koenig <frkoenig@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>