The spec does not have such requirement, but anv requires it for
validating the offset. However, for DRM_FORMAT_YVU420, chroma channels
can be swapped upon import to match B/R channel order of
VK_FORMAT_G8_B8_R8_3PLANE_420_UNORM.
This fixes some sw codec path in Instagram when interop with gpu.
v2: fix image memory requirement for re-ordered explicit import
Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Emma Anholt <emma@anholt.net> (v1)
Reviewed-by: Matt Tuner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23643>