drm_hwcomposer: Convert UNKNOWN sample range and dataspace
Distinguish between Dataspace and SampleRange of value UNKNOWN vs some other unsupported value.
In practice, UNKNOWN (0) is common, and not handling it explicitly in the conversion leads to a lot of log spam.
Change-Id: Id4ff7884f96e0403e5fb5f628f2989597b8bbea2 Signed-off-by: Drew Davenport ddavenport@google.com