ccache: upgrade to 3.2.4

ccache does not support debug fission until 3.2.3.
So we need to upgrade it for debug fission.

BUG=chromium:599633
TEST=cbuildbot chromiumos-sdk falco-release

Change-Id: I81d1b68dc6f58c2b04932ff20f5782ca5977ddfd
Reviewed-on: https://chromium-review.googlesource.com/340368
Commit-Ready: Yunlian Jiang <yunlian@chromium.org>
Tested-by: Yunlian Jiang <yunlian@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
5 files changed