host/lib/flashrom_drv.c: Ensure buffer is large enough in write op

BUG=b:207808292
BRANCH=none
TEST=emerge-octopus and cros deploy'ed

Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Change-Id: I8a8f941f224416d872592d6cc2de4caf058cb5bc
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/3512274
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: Edward O'Callaghan <quasisec@chromium.org>
Auto-Submit: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Nikolai Artemiev <nartemiev@google.com>
Commit-Queue: Nikolai Artemiev <nartemiev@google.com>
1 file changed