linuxptp: Uprev to 2.0

BUG=b:144279331
TEST=emerge linuxptp

Change-Id: I3a18d81d043258a0f1447b0fc0ae8d387d6694cf
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2236672
Tested-by: Pablo Ceballos <pceballos@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Pablo Ceballos <pceballos@chromium.org>
2 files changed