tools: Fix error message for vpd -d unknown_key.

Provide an error message consistent with others, using proper
grammar, and making it clear that the whole vpd command is being
aborted, not just the -d actions.

BUG=none
TEST=cros_workon_make --board=${BOARD} --install vpd

Change-Id: I77fe3d76e1a5d57467b76ca11de67ccbb0c1f27f
Reviewed-on: https://chromium-review.googlesource.com/361372
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: Yves Arrouye <drcrash@google.com>
1 file changed
tree: 4b8070c497fbb08b4b9f0989b4d85d29948967d0
  1. include/
  2. init/
  3. lib/
  4. tests/
  5. util/
  6. LICENSE
  7. Makefile
  8. OWNERS
  9. README
  10. vpd.c