Add Build.Version.RELEASE_OR_PREVIEW_DISPLAY

Build.Version.RELEASE_OR_PREVIEW_DISPLAY propagates a string that
contains a user-friendly version name for preview releases, or the
Build.Version.RELEASE version for final releases.

Test: manual
Bug: 221950960
Change-Id: I31f8f67996e3e5e7edc00704b16b8df0db17d3a3
2 files changed