dtc: stabilize for arm/x86 too

This is used on targets too (via the library and flashmap) and not just
the host, so it needs to be marked stable for them.

BUG=chromium:262250
TEST=`cbuildbot chromiumos-sdk x86-alex-release daisy-release` works

Change-Id: I8df211c4d2142f534f5b3cdc7b4901d8886c5a9a
Reviewed-on: https://chromium-review.googlesource.com/181870
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
1 file changed