dev-libs: Build libfmt

BUG=b:177290952
TEST=CQ

Change-Id: Ia7688d7934cc48bc4ad1295c3ccb69f1540e8473
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2947924
Tested-by: Po-Hsien Wang <pwang@chromium.org>
Auto-Submit: Po-Hsien Wang <pwang@chromium.org>
Reviewed-by: Ilja H. Friedel <ihf@chromium.org>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Commit-Queue: Ilja H. Friedel <ihf@chromium.org>
Commit-Queue: Chad Versace <chadversary@chromium.org>
5 files changed