freedreno/registers: install gzip'd register database

The decode tools aren't too useful to install without the xml.  But
since libxml2 can read compressed xml, we'll gzip them for installation.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6154>
4 files changed