Set POSTSUBMIT_BINHOST=gs://chromeos-prebuilt/board/arm64-generic/postsubmit-R147-16586.0.0-82830-8689936066205565809/packages.

Automatically generated by go/bbid/8689936066205565809

Cr-Build-Id: 8689936066205565809
Change-Id: Id566b59208a1c93e7ece3c5809c7b3fc35e7e6ec
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/7577270
Bot-Commit: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>