dediprog: Backport FLASH_TARGET to align with upstream

This ended up being a backport of the upstream `commit 5e5e8213`.

BUG=chromium:478356
BRANCH=none
TEST=still builds

Change-Id: I7e4eb4e968094d07254f9f349aef5576de4aac25
Signed-off-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1492819
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Reviewed-by: Sam McNally <sammc@chromium.org>
1 file changed