Test power button in kb_8042 test
Test power button in kb_8042 test

This checks keycodes are sent correctly when power button is pressed.

BUG=chrome-os-partner:19236
TEST=Pass the test
BRANCH=None

Change-Id: Ibaa4ffce749167be5b8376aada0786f9760e7707
Signed-off-by: Vic Yang <5fd92abeee651458f98e2856f4f200ee971cee4d@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/62955
Reviewed-by: Yung-Chieh Lo <2d80bee8408e64f859a1b5868bd3b311c0a4b4cd@chromium.org>
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

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